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                                                                   EXHIBIT 10.11

                           FIRST AMENDMENT TO MASTER 
                         DEVELOPMENT FRAMEWORK AGREEMENT


          THIS FIRST AMENDMENT TO MASTER DEVELOPMENT FRAMEWORK AGREEMENT is made
as of May 21, 1997 by and between WESTFIELD AMERICA, INC. a Missouri
corporation (formerly known as CenterMark Properties, Inc). ("Owner"), and
WESTFIELD CORPORATION, INC., a Delaware corporation ("Developer").

                              W I T N E S S E T H: 

          WHEREAS, Owner and Developer are parties to that certain Master
Development Framework Agreement, dated as of July 1, 1996; and

          WHEREAS, Owner and Developer desire to amend the Master Development
Framework Agreement in the manner hereinafter set forth.

          NOW, THEREFORE, for good and valuable consideration, the receipt and
sufficiency of which is hereby acknowledged, Owner and Developer agree as
follows:

          1.  DEFINITIONS.  All capitalized terms used herein without definition
shall have the respective meanings set forth in the Master Development Framework
Agreement.

          2.  AMENDMENT TO SECTION 6.4 OF THE MASTER DEVELOPMENT FRAMEWORK
AGREEMENT.  Section 6.4 of the Master Development Framework Agreement is hereby
amended by deleting subsection 6.4.1 thereof in its entirety and substituting
the following therefor:

              "6.4.1. Upon the approval of the trustee (the "WAT Trustee") of
          the Westfield America Trust, an Australian publicly listed property
          trust, and 75% of the Independent Directors (as such term is defined
          in the Third Amended and Restated Articles of the Owner) of the
          Owner's Board of Directors, Owner may terminate this Agreement if
          Owner has previously terminated the Advisory Agreement and the
          Management Agreements in accordance with their terms, PROVIDED that
          such termination shall not be applicable to any development project
          for which Developer has performed substantial pre-development services
          prior to the date of termination or for which a Development Agreement
          has previously been executed and PROVIDED FURTHER that the WAT
          Trustee's agreement will only be required if the WAT Trustee is the
          owner of 10% or more of  the outstanding capital stock of the Owner. 
          If Owner elects to terminate this Agreement, Owner shall designate the
          date, not less than 60 nor more than 180 days from the date of the
          termination notice, on which this Agreement shall terminate."


                                    


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          3.  RATIFICATION.  Except as amended hereby, the Master Development
Framework Agreement is hereby ratified and remains in full force and effect.

          4.  COUNTERPARTS.  This Amendment may be executed in any number of
counterparts, each of which shall be effective only upon delivery and thereafter
shall be deemed an original, and all of which shall be taken to be one and the
same instrument, with the same effect as if all parties hereto had all signed
the same signature page.  Any signature page of this Amendment may be detached
from any counterpart of this Amendment without impairing the legal effect of any
signatures thereon and may be attached to another counterpart of this Amendment
identical in form hereto but having attached to it one more additional signature
pages.

          5.  EFFECTIVE DATE.  This Amendment shall be effective as of the
closing of the initial public offering of common stock of the Owner pursuant to
its Registration Statement on Form S-11 (No. 333-22731).

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          IN WITNESS WHEREOF, the parties hereto have caused this Agreement to
be executed as of the date first above written.

                                     OWNER:

                                       WESTFIELD AMERICA, INC.

                                       By:     /s/ Peter S. Lowy
                                          ---------------------------------
                                       Name:  Peter S. Lowy
                                       Title:  Co-President


                                     DEVELOPER:

                                       WESTFIELD CORPORATION, INC.

                                       By:  /s/ Richard Green
                                          ---------------------------------
                                          Name: Richard Green
                                          Title: President



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