Exhibit 21

HILTON HOTELS CORPORATION  SUBSIDIARIES, JOINT VENTURES AND AFFILIATES

A. Wholly Owned Subsidiaries

|Name                                                             |  | State or Country
of Incorporation
|---------------------------------------------------------------- |  | ---------------------------------
|349 West 53rd St., Inc. (1)                                      |  | New York                         
|90210 Corporation                                                |  | Delaware                         
|Aloma, Inc. (29)                                                 |  | Delaware                         
|Arizona DTM Florida, Inc. (1) (32)                               |  | Florida                          
|Arizona DTM Pasadena (32)                                        |  | California                       
|ATM Hotels Pty. Limited(6)                                       |  | Australia                        
|Bally's Grand Property Sub I, Inc. (7)                           |  | Nevada                           
|Boise-Red Lion/Downtowner, Inc. (30)                             |  | Idaho                            
|Capital Hilton, L.L.C.                                           |  | New York                         
|Chicago Hilton LLC (39)                                          |  | Delaware                         
|Compass, Inc. (1) (23)                                           |  | Tennessee                        
|Compri Realty Corporation No.1 (1) (35)                          |  | Arizona                          
|Compris Hotel Corporation (33)                                   |  | Delaware                         
|Conrad International (Belgium) Corporation (4)                   |  | Nevada                           
|Conrad International (Cairo) Corporation (4)                     |  | Nevada                           
|Conrad International Corporation (3)                             |  | Nevada                           
|Conrad International (Egypt) Corporation (2) (4)                 |  | Nevada                           
|Conrad International (Egypt) Resorts Corporation (4)             |  | Nevada                           
|Conrad International (Indonesia) Corporation (2) (4)             |  | Nevada                           
|Conrad International (Spain) Corporation (1) (2) (4)             |  | Nevada                           
|Conrad International (Thailand) Corporation (2) (4)              |  | Nevada                           
|Conrad International (Thailand) Limited (4)                      |  | Thailand                         
|Conrad International Hotels (HK) Ltd. (4)                        |  | Hong Kong                        
|Conrad International Investment (Jakarta) Corporation (4)        |  | Nevada                           
|Conrad International Management Services (Singapore) Pte Ltd (4) |  | Singapore                        
|Conrad International Services (11)                               |  | Belgium                          
|Destination Resorts, Inc. (13)                                   |  | Arizona                          
|DFW Bevco, Inc. (10)                                             |  | Texas                            
|DFW Hilton, Inc. (13)                                            |  | Nevada                           
|Doubletree Corporation (18)                                      |  | Delaware                         
|Doubletree Hotel Systems, Inc. (21)                              |  | Arizona                          
|Doubletree Hotel Ventures, Inc. (35)                             |  | Arizona                          
|Doubletree Hotels Corporation (19)                               |  | Arizona                          
|Doubletree, Inc. of California (35)                              |  | Arizona                          
|Doubletree of Phoenix, Inc. (20)                                 |  | Delaware                         
|DT Investments, Inc. (35)                                        |  | Arizona                          
|DT Management, Inc. (21)                                         |  | Arizona                          
|DT Real Estate, Inc. (21)                                        |  | Arizona                          
|DTM Antlers, Inc. (1) (32)                                       |  | Arizona                          
|DTM Atlanta/Legacy, Inc. (36)                                    |  | Arizona                          
|DTM Burlingame, Inc. (32)                                        |  | Arizona                          

1

---

|DTM Cambridge, Inc. (32)                                       |  | Massachusetts
|-------------------------------------------------------------- |  | -------------
|DTM Coconut Grove, Inc. (32)                                   |  | Arizona      
|DTM Largo, Inc. (32)                                           |  | Arizona      
|DTM Maryland, Inc. (32)                                        |  | Arizona      
|DTM Nashville, Inc. (32)                                       |  | Arizona      
|DTM Oklahoma, Inc. (32)                                        |  | Arizona      
|DTM Palm Springs, Inc. (1) (32)                                |  | Arizona      
|DTM Salt Lake City, Inc. (32)                                  |  | Utah         
|DTM Santa Clara, Inc. (32)                                     |  | Arizona      
|DTM St. Louis, Inc. (32)                                       |  | Arizona      
|DTM Tampa, Inc. (32)                                           |  | Florida      
|DTM Tulsa, Inc. (32)                                           |  | Arizona      
|DTM Ventura, Inc. (32)                                         |  | Arizona      
|DTM Walnut Creek, Inc. (32)                                    |  | Arizona      
|DTR Cambridge, Inc. (35)                                       |  | Arizona      
|DTR FCH Holdings, Inc. (35)                                    |  | Arizona      
|DTR Independence, Inc. (36)                                    |  | Arizona      
|DTR North Canton, Inc. (36)                                    |  | Arizona      
|DTR PAH Holding, Inc. (36)                                     |  | Arizona      
|DTR RFS Lessee, Inc. (34)                                      |  | California   
|DTR San Antonio, Inc. (36)                                     |  | Arizona      
|DTR Sonoran Holding, Inc. (35)                                 |  | Arizona      
|DTR TM Holdings, Inc. (35)                                     |  | Arizona      
|DTR West Montrose, Inc. (36)                                   |  | Arizona      
|EJP Corporation (23)                                           |  | Delaware     
|Embassy Development Corporation (23)                           |  | Delaware     
|Embassy Equity Development Corporation (23)                    |  | Delaware     
|Embassy Memphis Corporation (23)                               |  | Tennessee    
|Embassy Suites Club No. 1, Inc.(23)                            |  | Kansas       
|Embassy Suites Club No. Two, Inc.(23)                          |  | Texas        
|Embassy Suites Club No. Three, Inc. (23)                       |  | Louisiana    
|Embassy Suites (Isla Verde), Inc. (23)                         |  | Delaware     
|Embassy Suites (Puerto Rico), Inc. (23)                        |  | Delaware     
|Embassy Syracuse Development Corporation (26)                  |  | Delaware     
|EPAM Corporation (23)                                          |  | Delaware     
|ESI Development, Inc. (23)                                     |  | Delaware     
|ESI Mortgage Development Corporation (23)                      |  | Delaware     
|Grand Vacations Realty, LLC (16)                               |  | Delaware     
|Grand Vacations Title, LLC (17)                                |  | Delaware     
|Guest Quarters Services Corporation (38)                       |  | Illinois     
|Hampton Inns, Inc. (23)                                        |  | Delaware     
|Hapeville Investors, LLC                                       |  | Delaware     
|Harbor Hotel Corporation (37)                                  |  | Delaware     
|Harrison Conference Associates, Inc. (20)                      |  | Delaware     
|Harrison Conference Center of Glen Cove, Inc. (29)             |  | New York     
|Harrison Conference Center of Lake Bluff, Inc. (29)            |  | Illinois     
|Harrison Conference Food Services of New Jersey, Inc. (1) (29) |  | New Jersey   
|Harrison Conference Services, Inc. (28)                        |  | New York     
|Harrison Conference Services of Boston, Inc. (29)              |  | Massachusetts

2

---

|Harrison Conference Services of Connecticut, Inc. (29)     |  | Connecticut   
|---------------------------------------------------------- |  | --------------
|Harrison Conference Services of Florida, Inc. (29)         |  | Florida       
|Harrison Conference Services of Illinois, Inc. (1) (29)    |  | Illinois      
|Harrison Conference Services of Massachusetts, Inc. (29)   |  | Massachusetts 
|Harrison Conference Services of North Carolina, Inc. (29)  |  | North Carolina
|Harrison Conference Services of Princeton, Inc. (29)       |  | New Jersey    
|Harrison Conference Services of Wellesley, Inc. (29)       |  | Massachusetts 
|HHI Worldwide Holdings, Inc. (25)                          |  | Delaware      
|Hilton Chicago Corporation (13)                            |  | Nevada        
|Hilton Dallas, Inc. (13)                                   |  | Nevada        
|Hilton Employee Relief Fund                                |  | California    
|Hilton Equipment Corporation (12)                          |  | Delaware      
|Hilton Finance Corporation (12)                            |  | Nevada        
|Hilton Grand Vacations Club, LLC (16)                      |  | Delaware      
|Hilton Grand Vacations Company, LLC (16)                   |  | Delaware      
|Hilton Grand Vacations Development Company- Las Vegas, LLC |  | Nevada        
|Hilton Hawaii Corporation (13)                             |  | Delaware      
|Hilton Hawaiian Village LLC (15)                           |  | Hawaii        
|Hilton Holdings, Inc.                                      |  | Nevada        
|Hilton Hospitality, Inc. (12)                              |  | Nevada        
|Hilton Hotels Partners I, LLC                              |  | Delaware      
|Hilton Hotels Partners II, LLC                             |  | Delaware      
|Hilton Hotels U.S.A., Inc.                                 |  | Delaware      
|Hilton Illinois Corp. (7)                                  |  | Nevada        
|Hilton Illinois Holdings, Inc. (13)                        |  | Delaware      
|Hilton Inns, Inc.(12)                                      |  | Delaware      
|Hilton Insurance Corporation (22)                          |  | Vermont       
|Hilton Kansas City Corporation                             |  | Missouri      
|Hilton Michigan Avenue Corporation (14)                    |  | Delaware      
|Hilton Real Estate Holdings, Inc.                          |  | Delaware      
|Hilton Recreation, Inc. (13)                               |  | Delaware      
|Hilton Resorts Corporation                                 |  | Delaware      
|Hilton Resorts Holding Corp.                               |  | Delaware      
|Hilton San Diego Corporation (13)                          |  | California    
|Hilton SPE Holding, Inc. (9)                               |  | Delaware      
|Hilton Spring Corporation (39)                             |  | Delaware      
|Hilton Suites, Inc. (13)                                   |  | Delaware      
|Hilton Systems, LLC                                        |  | Delaware      
|Hilton Texas, Inc. (13)                                    |  | Nevada        
|HKC Advertising, Inc. (1)(5)                               |  | Missouri      
|HKC Partners, Inc.                                         |  | Missouri      
|Hosco Corporation (20)                                     |  | Arizona       
|Houston Airport Doubletree, Inc. (1) (35)                  |  | Texas         
|Hotel Clubs of Corporate Woods, Inc. (21)                  |  | Kansas        
|Hotels Statler Company, Inc. (13)                          |  | Delaware      
|Innco Corporation (20)                                     |  | Arizona       
|InnVision, LLC                                             |  | Delaware      
|Kenner Investors, LLC                                      |  | Delaware      
|Kingston Plantation Hotel Management Company (23)          |  | Delaware      

3

---

|McLean Hilton LLC (39)                       |  | Delaware  
|-------------------------------------------- |  | ----------
|MeriTex, LLC (8)                             |  | Delaware  
|Old Town Hotel Corp. (23)                    |  | Delaware  
|Pacific Hotels, Inc. (23)                    |  | Tennessee 
|PHI Austin, L.L.C. (23)                      |  | Delaware  
|PHI Dallas, L.L.C. (23)                      |  | Delaware  
|PHI Dulles, L.L.C. (23)                      |  | Delaware  
|Phoenix SP Hilton LLC (39)                   |  | Delaware  
|Promus BPC Corporation (23)                  |  | Delaware  
|Promus Hotel Corporation                     |  | Delaware  
|Promus Hotel Services, Inc. (23)             |  | Delaware  
|Promus Hotels Florida, Inc. (23)             |  | Delaware  
|Promus Hotels Minneapolis, Inc. (23)         |  | Delaware  
|Promus Hotels, Inc. (22)                     |  | Delaware  
|Promus/Kingston Development Corporation (23) |  | Delaware  
|Promus Operating Company, Inc. (18)          |  | Delaware  
|Red Lion Hotel Systems, Inc. (30)            |  | Arizona   
|Red Lion Hotels, Inc. (19)                   |  | Delaware  
|Red Lion Properties, Inc. (30)               |  | Delaware  
|RFS Hotel Investors, Inc. (31)               |  | Delaware  
|RFS Leasing, Inc. (31)                       |  | Tennessee 
|RFS, Inc. (19)                               |  | Tennessee 
|SALC, Inc. (30)                              |  | Texas     
|Samantha Hotel Corporation (19)              |  | Delaware  
|San Francisco Hilton, Inc. (25)              |  | Delaware  
|Scottsdale Plaza Doubletree, Inc. (1) (35)   |  | Arizona   
|Short Hills Hilton LLC (39)                  |  | Delaware  
|Southfield Hotel Management, Inc. (1) (26)   |  | Florida   
|S.F. Hilton, Inc. (39)                       |  | Delaware  
|Suite Life, Inc. (27)                        |  | Delaware  
|Tarsa, Inc. (1) (28)                         |  | New York  
|Tex Holdings, Inc.                           |  | Delaware  
|The Boise Red Lion Motor Inn, Inc. (30)      |  | Delaware  
|TUK Inns, Inc. (35)                          |  | Washington
|Washington Hilton, L.L.C.                    |  | New York  

---

4

---

5

---

6

---

B. Partially Owned Subsidiaries

|Name                                                                                                                    |  | %
Ownership    |  | State or Country
of Incorporation
|----------------------------------------------------------------------------------------------------------------------- |  | -------------- |  | ---------------------------------
|Arlington Hotel Co.                                                                                                     |  | 51             |  | Arizona                          
|Betty MacWilliam & Company (1)                                                                                          |  | 49             |  | Texas                            
|Boise Beverage Corporation                                                                                              |  | 50             |  | Idaho                            
|Candlewood Hotel Company, Inc.                                                                                          |  | 28.7           |  | Delaware                         
|Club Mack Opco, LLC                                                                                                     |  | 50             |  | Delaware                         
|Conrad Hotels Worldwide, LLC (6) (12)                                                                                   |  | 50             |  | Delaware                         
|Doubletree de Mexico, S.A. de C.V.                                                                                      |  | 50             |  | Mexico                           
|DTR Boston Heights, Inc.                                                                                                |  | 80             |  | Arizona                          
|DTR Houston, Inc.                                                                                                       |  | 80             |  | Arizona                          
|Earlsfort Centre Hotel Proprietors Limited (2)                                                                          |  | 14.7           |  | Ireland                          
|FCH/DT Hotels, L.L.C.                                                                                                   |  | 10             |  | Delaware                         
|FCH/DT Leasing, L.L.C.                                                                                                  |  | 50             |  | Delaware                         
|GOL Texas, Inc. (1) (11)                                                                                                |  | 49             |  | Texas                            
|HHC/PTC, LLC (3)                                                                                                        |  | 75             |  | Delaware                         
|Hilton HHonors Worldwide, L.L.C. (6)                                                                                    |  | 50             |  | Delaware                         
|Hilton Marketing Worldwide, L.L.C. (6)                                                                                  |  | 50             |  | Delaware                         
|Hilton Reservations Worldwide, L.L.C. (6)                                                                               |  | 50             |  | Delaware                         
|InnMedia LLC                                                                                                            |  | 50             |  | Delaware                         
|Intermediate MD Property Company (5)                                                                                    |  | See (5) below. |  | Maryland                         
|International Company for Touristic Investments, S.A.E. (7)                                                             |  | 10             |  | Egypt                            
|Louisville Club Opco, L.L.C.                                                                                            |  | 15             |  | Delaware                         
|LSA Club One, Inc.                                                                                                      |  | 49             |  | Delaware                         
|Norwalk Club Opco, L.L.C.                                                                                               |  | 15             |  | Delaware                         
|Oakbrook Hilton Suites and Garden Inn LLC (8)                                                                           |  | 50             |  | Illinois                         
|Praedium II, Largo Associates, L.L.C.                                                                                   |  | 20             |  | Maryland                         
|Praedium II San Antonio, L.P.                                                                                           |  | 20             |  | Texas                            
|Promus/FCH Condominium Company, LLC                                                                                     |  | 50             |  | Delaware                         
|Promus/FCH Development Company, LLC                                                                                     |  | 50             |  | Delaware                         
|P.T. Jakarta International Artha (9)                                                                                    |  | 10             |  | Indonesia                        
|Red Lion/Riverfront, L.L.C.                                                                                             |  | 10             |  | Delaware                         
|RW Motels, Ltd.                                                                                                         |  | 25             |  | Texas                            
|VRLB, Inc.                                                                                                              |  | 4.5            |  | Montana                          
|Windsor Casino Financial Limited (10)                                                                                   |  | 50             |  | Ontario, Canada                  
|Windsor Casino Limited (10)                                                                                             |  | 50             |  | Ontario, Canada                  
|Windsor Casino Supplies Limited (10)                                                                                    |  | 50             |  | Ontario, Canada                  
|Yeditepe Beynelmilel Otelcilik Turizm Ve Ticaret, A.S. ("Seven Hills International Hotels, Tourism and Trade, A.S.")(4) |  | 25             |  | Turkey                           

---

7

---

8

---

C. Joint Ventures

|Name                                                 |  | %
Ownership |  | State or Country
of Incorporation
|---------------------------------------------------- |  | ----------- |  | ---------------------------------
|Avenue Louise Hotel Partners S.N.C. (9)              |  | 100         |  | Belgium                          
|Bakersfield Red Lion Motor Inn                       |  | 66.7        |  | California                       
|BHH Management Associates (1)                        |  | 99          |  | Massachusetts                    
|Corporate AssociatesAtlanta Limited Partnership (1) |  | 13.78       |  | Arizona                          
|Corporate AssociatesBoise Limited Partnership       |  | 13.33       |  | Arizona                          
|Corporate AssociatesNewport Limited Partnership (1) |  | 13.33       |  | Arizona                          
|Custom House Hotel, L.P.                             |  | 2.11        |  | Missouri                         
|DDP Partners, L.P.                                   |  | 5.54        |  | Tennessee                        
|Destination Resort Affiliates (3)                    |  | 50          |  | Arizona                          
|DFW Hilton Hotel Limited Partnership (4)             |  | 100         |  | Texas                            
|Doubletree Partners                                  |  | 100         |  | Delaware                         
|DTR Limited Partnership                              |  | 100         |  | Arizona                          
|Embassy Akers Venture                                |  | 50          |  | Delaware                         
|Embassy La Jolla Partners Limited Partnership        |  | 10          |  | Delaware                         
|Embassy/Shaw Rochester Venture (1)                   |  | 50          |  | Delaware                         
|EPT Austin L.P.                                      |  | 50          |  | Delaware                         
|EPT Atlanta Perimeter Center L.P.                    |  | 50          |  | Delaware                         
|EPT Covina L.P.                                      |  | 50          |  | Delaware                         
|EPT Kansas City L.P.                                 |  | 50          |  | Delaware                         
|EPT Meadowlands L.P.                                 |  | 50          |  | Delaware                         
|EPT Overland Park L.P.                               |  | 50          |  | Delaware                         
|EPT Raleigh L.P.                                     |  | 50          |  | Delaware                         
|EPT San Antonio L.P.                                 |  | 50          |  | Delaware                         
|Felcor Suites L.P.                                   |  | 2.53        |  | Delaware                         
|Fess ParkerRed Lion Hotel                           |  | 49.09       |  | California                       
|Flamingo Hilton Riverboat Casino, L.P. (5)           |  | 100         |  | Missouri                         
|FCH/DT BWI Holdings, L.P.                            |  | 100         |  | Delaware                         
|Glendale Red Lion Hotel                              |  | 75          |  | California                       
|Global Resort Partners (6)                           |  | 13.34       |  | Hawaii                           
|GOL Columbia L.P.                                    |  | 100         |  | Delaware                         
|Granada Royale Hometel-West L.P. (1)                 |  | 50.003      |  | Delaware                         
|Granada Royale Hometel-Tucson L.P.                   |  | 65          |  | Delaware                         
|Hapeville Hotel Limited Partnership (7)              |  | 100         |  | Delaware                         
|Highland Plaza Partners, L.P.                        |  | 5           |  | Tennessee                        
|Hospitality Capital Group                            |  | 33.33       |  | Delaware                         
|Hotel Equities Co.                                   |  | 2.1         |  | Arizona                          
|Hotel Properties-Boise                               |  | 50          |  | Arizona                          
|Hotel Properties-Newport (1)                         |  | 61          |  | Arizona                          
|Hutton Centre Hotel Associates (1)                   |  | 30.5        |  | California                       
|International Rivercenter Partnership                |  | 67.4        |  | Louisiana                        
|Kenner Hotel Limited Partnership (8)                 |  | 100         |  | Delaware                         
|King Street Station Hotel Associates, L.P.           |  | 50          |  | Delaware                         
|MHV J.V.                                             |  | 50          |  | Delaware                         
|New Orleans International Hotel                      |  | 26.33       |  | Louisiana                        
|New Orleans Rivercenter                              |  | 38.75       |  | Louisiana                        
|Ontario Red Lion Motor Inn                           |  | 66.7        |  | California                       
|Pacific Market Investment Company                    |  | 50          |  | Delaware                         

9

---

|PAH-DT Allen Partners, LP                |  | 15   |  | Delaware  
|---------------------------------------- |  | ---- |  | ----------
|PAH-DT Chicago/O'Hare Partners, LP       |  | 10   |  | Delaware  
|PAH-DT Miami Airport Partners, L.P.      |  | 10   |  | Delaware  
|PAH-DT Minneapolis Suites Partners, L.P. |  | 10   |  | Delaware  
|PAH-DT Park Place Partners, L.P.         |  | 10   |  | Delaware  
|PAH-DT Tallahassee Partners, L.P.        |  | 10   |  | Delaware  
|Promus/Felcor Lombard L.P.               |  | 50   |  | Delaware  
|Promus/Felcor Parsippany L.P.            |  | 50   |  | Delaware  
|Promus/Felcor San Antonio Joint Venture  |  | 50   |  | Delaware  
|Red Lion La Posada                       |  | 100  |  | Arizona   
|Red Lion Orange County Partners, L.P.    |  | 51   |  | California
|Santa Barbara Red Lion Hotel             |  | 100  |  | California
|SES/DC Venture                           |  | 25   |  | Delaware  
|SF Partners                              |  | 2.5  |  | Delaware  
|Southcenter Motor Hotel, Ltd.            |  | 20.2 |  | Washington
|Thayer Hotel Investors II, L.P.          |  | 4.35 |  | Delaware  
|THI Metairie, L.P.                       |  | 4.35 |  | Delaware  
|THI Oceanfront, L.P.                     |  | 4.35 |  | Delaware  
|THI Plantation, L.P.                     |  | 4.35 |  | Delaware  
|THI Rockville, L.P.                      |  | 4.35 |  | Delaware  
|THI Skokie, L.P.                         |  | 4.35 |  | Delaware  
|THI Somerset, L.P.                       |  | 4.35 |  | Delaware  
|Tucson Hotel Equity Limited Partnership  |  | 49.9 |  | Arizona   
|Valencia Hotel Joint Venture (2)         |  | 25   |  | California
|Village Motor Inn                        |  | 50   |  | Montana   

---

10

---

D. Affiliates

Name of Corporation

State of
IncorporationDallas DBLT Club

TexasHilton Beverage Corporation

LouisianaNew Orleans Hilton Beverage Corporation

LouisianaTapas Corporation

Utah


Name of Corporation

State of
IncorporationWashington Hilton Racquet Club

District of Columbia


11

---

QuickLinks