Document:

<PAGE>
                                                                   Exhibit 10(z)
                                      NOTE

$25,000,000.00                                                New York, New York
                                                              December 28, 2000

         FOR VALUE RECEIVED, the undersigned, GGP LIMITED PARTNERSHIP, a
Delaware limited partnership, and GGPLP L.L.C., a Delaware limited liability
company (individually and collectively, the "Borrower"), jointly and severally,
hereby unconditionally promise to pay to the order of THE CHASE MANHATTAN BANK
(the "Lender") at the office of Bankers Trust Company, located at 130 Liberty
Street, New York, New York 10006 in lawful money of the United States of America
and in immediately available funds, the principal amount of TWENTY-FIVE MILLION
DOLLARS ($25,000,000.00), or, if less, the unpaid principal amount of the Loans
made by the Lender pursuant to Section 2.1 or Article III of the Term Loan
Agreement, as hereinafter defined. The Borrower further agrees to pay interest
in like money at such office on the unpaid principal amount hereof from time to
time outstanding at the rates and on the dates specified in Section 5.1 of such
Term Loan Agreement.

         The holder of this Note is authorized to endorse on the schedules
annexed hereto and made a part hereof or on a continuation thereof which shall
be attached hereto and made a part hereof the date, type and amount of the
Loan(s) evidenced hereby and the date and amount of each payment or prepayment
of principal with respect thereto, each conversion of all or a portion thereof
to another type, each continuation of all or a portion thereof as the same type
and, in the case of Eurodollar Rate Loans, the length of each Interest Period
with respect thereto. Each such endorsement shall constitute prima facie
evidence of the accuracy of the information endorsed. The failure to make any
such endorsement shall not affect the obligations of the Borrower in respect of
such Loan.

         This Note (a) is one of the Notes referred to in the Term Loan
Agreement dated as of July 31, 2000 (as amended, supplemented or otherwise
modified from time to time, the "Term Loan Agreement"), among the Borrower, the
Lender, the other institutions from time to time parties thereto as lenders and
Bankers Trust Company, as administrative agent, (b) is subject to the provisions
of the Term Loan Agreement and (c) is subject to voluntary and mandatory
prepayment in whole or in part as provided in the Term Loan Agreement. This Note
is guaranteed as provided in the Loan Documents. Reference is made to the Loan
Documents for the nature and extent of the guarantees, the terms and conditions
upon which each guarantee was granted and the rights of the holder of this Note
in respect thereof.

         Upon the occurrence and during the continuance of any one or more of
the Events of Default, all amounts then remaining unpaid on this Note shall
become, or may be declared to be, immediately due and payable, all as provided
in the Term Loan Agreement.
<PAGE>

         To the extent not prohibited by law, all parties now and hereafter
liable with respect to this Note, whether maker, principal, surety, guarantor,
endorser or otherwise, hereby waive presentment, demand, protest and all other
notices of any kind.

         Unless otherwise defined herein, terms defined in the Term Loan
Agreement and used herein shall have the meanings given to them in the Term Loan
Agreement.

         NOTWITHSTANDING ANYTHING TO THE CONTRARY CONTAINED HEREIN OR IN THE
TERM LOAN AGREEMENT, THIS NOTE MAY NOT BE TRANSFERRED EXCEPT PURSUANT TO AND IN
ACCORDANCE WITH THE REGISTRATION AND OTHER PROVISIONS OF SECTION 15.1 OF THE
TERM LOAN AGREEMENT. THIS NOTE SHALL BE GOVERNED BY, AND CONSTRUED AND
INTERPRETED IN ACCORDANCE WITH, THE LAW OF THE STATE OF NEW YORK.

            [The remainder of this page is intentionally left blank]
<PAGE>

         IN WITNESS WHEREOF, the Borrower has caused this Note to be executed
and delivered by its duly authorized officer as of the day and year first above
written.

                            GGPLP L.L.C., a Delaware limited liability
                            company

                            By:  GGP LIMITED PARTNERSHIP, a Delaware
                                 limited partnership, its sole managing member

                            By:  GENERAL GROWTH PROPERTIES, INC., a
                                 Delaware corporation, its sole general partner

                            By:  _________________________________
                                 Name:  Bernard Freibaum
                                 Title: Executive Vice President

                            GGP LIMITED PARTNERSHIP, a Delaware
                            limited partnership

                            By:  GENERAL GROWTH PROPERTIES, INC., a
                                 Delaware corporation, its sole general partner

                            By:  ____________________________________
                                 Name:  Bernard Freibaum
                                 Title: Executive Vice President
<PAGE>

                                                                      Schedule A
                                                                         to Note
                                                                         -------

              LOANS, CONVERSIONS AND REPAYMENTS OF BASE RATE LOANS

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                                        Amount                               Amount of Base Rate     Unpaid Principal
                                     Converted to   Amount of Principal of   Loans Converted to    Balance of Base Rate   Notation
  Date  Amount of Base Rate Loans  Base Rate Loans  Base Rate Loans Repaid  Eurodollar Rate Loans         Loans            Made By
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<S>     <C>                        <C>              <C>                     <C>                     <C>                    <C>
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</TABLE>
<PAGE>

                                                                      Schedule B
                                                                         to Note
                                                                         -------

    LOANS, CONTINUATIONS, CONVERSIONS AND REPAYMENTS OF EURODOLLAR RATE LOANS

<TABLE>
<CAPTION>
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                                       Interest Period and  Amount of Principal  Amount of Eurodollar   Unpaid Principal
          Amount of  Amount Converted    Eurodollar Rate       of Eurodollar          Rate Loans           Balance of
         Eurodollar    to Eurodollar          with                  Rate           Converted to Base       Eurodollar    Notation
  Date   Rate loans      Rate Loans       Respect Thereto       Loans Repaid          Rate Loans           Rate Loans     Made By
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<S>      <C>         <C>               <C>                  <C>                  <C>                    <C>              <C>
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</TABLE><PAGE>
                                                                  Exhibit 10(aa)
                                                                  EXECUTION COPY

                               SECOND AMENDMENT

         SECOND AMENDMENT, dated as of December 28, 2000 (this "Amendment"), to
the Term Loan Agreement, dated as of July 31, 2000 (such Loan Agreement, as
amended, supplemented or otherwise modified from time to time, the "Loan
Agreement"), among GGP LIMITED PARTNERSHIP, a Delaware limited partnership (the
"Partnership"), GGPLP L.L.C., a Delaware limited liability company (together
with the Partnership, the "Borrower"), the institutions from time to time
parties to the Loan Agreement as Lenders (the "Lenders"), BANKERS TRUST COMPANY,
a New York banking corporation, as a Lender and as administrative agent for the
Lenders (in such capacity, the "Administrative Agent") and LEHMAN COMMERCIAL
PAPER INC., as a Lender and as syndication agent for the Lenders (in such
capacity, the "Syndication Agent" and, together with the Administrative Agent,
the "Co-Agents").

                             W I T N E S S E T H:

         WHEREAS, pursuant to Section 3.2 of the Loan Agreement and the Joinder,
dated as of the date hereof (the "Joinder"), between The Chase Manhattan Bank
("Chase") and the Borrower, Chase has agreed to become a Lender, and to provide
an additional $25,000,000 Loan Commitment, under the Loan Agreement;

         WHEREAS, in connection with the execution of the Joinder, Chase has
requested that the Borrower and the Lenders agree to amend certain provisions of
the Loan Agreement;

         WHEREAS, the Borrower and the Lenders are willing to amend such
provisions upon the terms and subject to the conditions set forth herein;

         NOW, THEREFORE, in consideration of the premises and mutual agreements
contained herein, and for other valuable consideration the receipt of which is
hereby acknowledged, the parties hereto hereby agree as follows:

         1.  Definitions. All terms defined in the Loan Agreement shall have
such defined meanings when used herein unless otherwise defined herein.

         2.  Amendment to Section 1.1 (Certain Defined Terms). Section 1.1 of
the Loan Agreement is hereby amended by replacing the phrase "which is a party
hereto as a Lender" in the definition of "Lender" in such Section with the
phrase "which is or hereafter becomes a party hereto as a Lender".

         3.  Amendment to Section 5.3(a) (Agency Fee) Section 5.3(a) of the Loan
Agreement is hereby amended by replacing the reference to "$40,000" in such
Section with the following: "$50,000, plus an additional $5,000 for each Lender
in excess of three".

         4.  Amendment to Section 12.2 (Powers). Section 12.2 of the Loan
Agreement is hereby amended by adding immediately after paragraph (c) in such
Section a new paragraph (d) as follows:
<PAGE>

                                                                               2

             "(d) Notwithstanding anything to the contrary contained in this
         Section, each Lender shall be permitted to initiate any appropriate
         judicial action against the Borrower to collect payment in respect of
         such Lender's Note if, 180 days shall have elapsed after an Event of
         Default under Section 11.1(a) has occurred and is continuing, the
         Administrative Agent is not diligently pursuing enforcement of the Debt
         pursuant to Section 11.2 and the Lenders have not agreed in accordance
         with the applicable requirements of Section 15.7 to a waiver or consent
         under, or amendment or other modification to, this Agreement to waive,
         or otherwise provide for an amendment or modification in respect of,
         such Event of Default.".

         5.  Amendment to Section 15.1 (Assignments and Participations). Section
15.1 of the Credit Agreement is hereby amended by replacing each reference to
"Co-Agent" and "Co-Agents" in paragraph (f) in such Section with a reference to
"Lender" and "Lenders", as applicable.

         6.  Representations; No Default. On and as of the date hereof, and
after giving effect to this Amendment, (i) the Borrower certifies that no
Default or Event of Default has occurred or is continuing, and (ii) the Borrower
confirms, reaffirms and restates that the representations and warranties set
forth in Article VII of the Loan Agreement and in the other Loan Documents to
which it is a party are true and correct in all material respects, provided that
the references to the Loan Agreement therein shall be deemed to be references to
this Amendment and to the Loan Agreement as amended by this Amendment.

         7.  Conditions to Effectiveness. This Amendment shall become effective
on and as of the date that:

         (a)  the Administrative Agent shall have received counterparts of this
     Amendment, duly executed and delivered by a duly authorized officer of the
     Borrower and the Requisite Lenders; and

         (b)  the Administrative Agent shall have received an executed
     Acknowledgment and Consent, in the form set forth at the end of this
     Amendment, from GGP, Inc.

         8.  Limited Consent and Amendment. Except as expressly amended herein,
the Loan Agreement shall continue to be, and shall remain, in full force and
effect. This Amendment shall not be deemed to be a waiver of, or consent to, or
a modification or amendment of, any other term or condition of the Loan
Agreement or any other Loan Document or to prejudice any other right or rights
which the Co-Agents or the Lenders may now have or may have in the future under
or in connection with the Loan Agreement or any of the instruments or agreements
referred to therein, as the same may be amended from time to time.

         9.  Counterparts. This Amendment may be executed by one or more of the
parties hereto in any number of separate counterparts and all of said
counterparts taken together shall be deemed to constitute one and the same
instrument.
<PAGE>

                                                                               3

         10. GOVERNING LAW. THIS AMENDMENT SHALL BE GOVERNED BY, AND CONSTRUED
AND INTERPRETED IN ACCORDANCE WITH, THE LAWS OF THE STATE OF NEW YORK.
<PAGE>

         IN WITNESS WHEREOF, the parties hereto have caused this Amendment to be
executed and delivered by their respective duly authorized officers as of the
date first above written.

                                    GGP LIMITED PARTNERSHIP, as Borrower

                                    By:      GENERAL GROWTH PROPERTIES,
                                             INC., its sole general partner

                                    By:  ______________________________________
                                         Name:
                                         Title:

                                    GGPLP L.L.C., as Borrower

                                    By:      GGP LIMITED PARTNERSHIP, its sole
                                             managing member

                                    By:      GENERAL GROWTH PROPERTIES,
                                             INC., its sole general partner

                                    By:  ______________________________________
                                         Name:
                                         Title:

                                    BANKERS TRUST COMPANY,
                                      as Administrative Agent and as a Lender

                                    By:  ______________________________________
                                         Name:
                                         Title:

                                    LEHMAN COMMERCIAL PAPER INC.,
                                      as Syndication Agent and as a Lender

                                    By:  ______________________________________
                                         Name:
                                         Title:
<PAGE>

                                    BAYERISCHE HYPO-UND VEREINSBANK
                                    AG, NEW YORK BRANCH, as a Lender

                                    By:  ______________________________________
                                         Name:
                                         Title:

                                    FLEET NATIONAL BANK, as a Lender

                                    By:  ______________________________________
                                         Name:
                                         Title:

                                    THE CHASE MANHATTAN BANK, as a Lender

                                    By:  ______________________________________
                                         Name:
                                         Title:
<PAGE>

                          ACKNOWLEDGMENT AND CONSENT

         The undersigned party to the Guaranty, dated as of July 31, 2000 and as
amended, supplemented or otherwise modified from time to time, made by the
undersigned in favor of Bankers Trust Company, as Administrative Agent, for the
benefit of the Lenders, hereby (a) consents to the transactions contemplated by
the foregoing Second Amendment and (b) acknowledges and agrees that the
guarantees contained in the Guaranty are, and shall remain, in full force and
effect after giving effect to such Amendment and all prior modifications to the
Loan Agreement.

                                             GENERAL GROWTH PROPERTIES, INC.

                                             By:  ______________________________
                                                  Name:
                                                  Title:

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