Question: When was the historic Naval Proving Ground at Indian Head established in the Charles County , Maryland city that also is home to Mount Aventine ?

text: National Register of Historic Places listings in Charles County, Maryland
Current listings

This is a list of the National Register of Historic Places listings in Charles County, Maryland. This is intended to be a complete list of the properties and districts on the National Register of Historic Places in Charles County, Maryland, United States. Latitude and longitude coordinates are provided for many National Register properties and districts; these locations may be seen together in a map. There are 39 properties and districts listed on the National Register in the county, including 1 National Historic Landmark. Two other sites in the county were once listed on the Register but have been removed.
Name on the Register Date listed Location City or town
1 Acquinsicke February 20 , 1992 ( # 92000070 ) Billingsley Rd . west of its junction with Maryland Route 228 38°36′30″N 77°02′14″W / 38.608333°N 77.037222°W / 38.608333 ; -77.037222 ( Acquinsicke ) Pomfret
2 Araby July 25 , 1974 ( # 74000947 ) Southeast of Mason on Maryland Route 425 38°34′43″N 77°06′54″W / 38.578611°N 77.115°W / 38.578611 ; -77.115 ( Araby ) Mason 's Springs
3 Bryantown Historic District March 14 , 1985 ( # 85000590 ) Maryland Route 5 and County Route 232 38°33′11″N 76°50′39″W / 38.553056°N 76.844167°W / 38.553056 ; -76.844167 ( Bryantown Historic District ) Bryantown
4 Cedar Grove March 2 , 1979 ( # 79001124 ) South of La Plata off Maryland Route 6 west of Blossom Point Rd . 38°28′50″N 77°04′22″W / 38.480556°N 77.072778°W / 38.480556 ; -77.072778 ( Cedar Grove ) La Plata
5 Ellerslie September 24 , 1979 ( # 79003264 ) West of Port Tobacco on Maryland Route 6 38°30′20″N 77°02′29″W / 38.505556°N 77.041389°W / 38.505556 ; -77.041389 ( Ellerslie ) Port Tobacco
6 The Exchange June 7 , 1984 ( # 84001763 ) 7310 Greenland Place 38°30′54″N 76°58′23″W / 38.515°N 76.973056°W / 38.515 ; -76.973056 ( The Exchange ) La Plata
7 Green 's Inheritance December 16 , 1977 ( # 77000692 ) Northeast of Pomfret on Maryland Route 227 38°35′19″N 77°01′13″W / 38.588611°N 77.020278°W / 38.588611 ; -77.020278 ( Green 's Inheritance ) Pomfret
8 Habre-de-Venture ; Thomas Stone National Historic Site October 31 , 1972 ( # 72001595 ) 6655 Rose Hill Rd. , near its junction with Maryland Routes 6 and 225 38°31′55″N 77°01′53″W / 38.531944°N 77.031389°W / 38.531944 ; -77.031389 ( Habre-de-Venture ; Thomas Stone National Historic Site ) Port Tobacco
9 The Hermitage July 23 , 1998 ( # 98000886 ) Washington Ave. 38°32′02″N 76°58′52″W / 38.533889°N 76.981111°W / 38.533889 ; -76.981111 ( The Hermitage ) La Plata
10 Johnsontown Tobacco Barn No . 2 December 27 , 2011 ( # 11000947 ) 9830 Johnsontown Rd . 38°29′12″N 76°58′17″W / 38.486547°N 76.971419°W / 38.486547 ; -76.971419 ( Johnsontown Tobacco Barn No . 2 ) La Plata vicinity
11 La Grange October 22 , 1976 ( # 76000990 ) Maryland Route 6 , west of U.S. Route 301 38°31′27″N 76°59′28″W / 38.524167°N 76.991111°W / 38.524167 ; -76.991111 ( La Grange ) La Plata
12 Linden November 23 , 1977 ( # 77000693 ) North of Port Tobacco on Mitchell Rd . 38°33′16″N 77°00′46″W / 38.554444°N 77.012778°W / 38.554444 ; -77.012778 ( Linden ) Port Tobacco
13 The Lindens April 23 , 1990 ( # 90000607 ) Maryland Route 488 38°33′07″N 76°52′32″W / 38.551944°N 76.875556°W / 38.551944 ; -76.875556 ( The Lindens ) Bryantown
14 Locust Grove July 21 , 1978 ( # 78001454 ) West of La Plata on Maryland Route 225 38°32′32″N 77°01′22″W / 38.542222°N 77.022778°W / 38.542222 ; -77.022778 ( Locust Grove ) La Plata
15 Mallows Bay-Widewater Historic and Archeological District April 24 , 2015 ( # 15000173 ) Off Charles County shoreline at Sandy Pt . 38°28′21″N 77°16′07″W / 38.4726°N 77.2686°W / 38.4726 ; -77.2686 ( Mallows Bay-Widewater Historic and Archeological District ) Nanjemoy vicinity
16 Marshall Hall May 12 , 1976 ( # 76000152 ) 5 miles north of Maryland Routes 210 and 227 38°41′06″N 77°05′55″W / 38.685°N 77.098611°W / 38.685 ; -77.098611 ( Marshall Hall ) Bryans Road
17 Maxwell Hall July 30 , 1974 ( # 74000949 ) East of Patuxent on Teagues Point Rd . 38°32′04″N 76°42′01″W / 38.534444°N 76.700278°W / 38.534444 ; -76.700278 ( Maxwell Hall ) Patuxent
18 McPherson 's Purchase January 3 , 1985 ( # 85000019 ) Maryland Route 227 38°35′56″N 77°02′51″W / 38.598889°N 77.0475°W / 38.598889 ; -77.0475 ( McPherson 's Purchase ) Pomfret
19 Mount Air December 22 , 1978 ( # 78001453 ) West of Faulkner off U.S. Route 301 38°26′12″N 76°59′50″W / 38.436667°N 76.997222°W / 38.436667 ; -76.997222 ( Mount Air ) Faulkner
20 Mount Aventine April 18 , 1996 ( # 94001328 ) 1.8 miles southwest of Bryans Rd . on the northwestern side of Chapman 's Landing Rd . 38°37′04″N 77°07′03″W / 38.617778°N 77.1175°W / 38.617778 ; -77.1175 ( Mount Aventine ) Bryans Road