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                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
                         ------------------------------
                                  SCHEDULE TO/A
            TENDER OFFER STATEMENT UNDER SECTION 14(d)(1) OR 13(e)(1)
                     OF THE SECURITIES EXCHANGE ACT OF 1934
                               (Amendment No. 13)
                              TAUBMAN CENTERS, INC.
                       (Name of Subject Company (Issuer))
                        SIMON PROPERTY ACQUISITIONS, INC.
                           SIMON PROPERTY GROUP, INC.
                             WESTFIELD AMERICA, INC.
                      (Names of Filing Persons (Offerors))
                     COMMON STOCK, PAR VALUE $.01 PER SHARE
                         (Title of Class of Securities)
                                    876664103
                      (CUSIP Number of Class of Securities)

       James M. Barkley, Esq.                     Peter R. Schwartz, Esq.
     Simon Property Group, Inc.                   Westfield America Inc.
        National City Center                     11601 Wilshire Boulevard
     115 West Washington Street                         12th Floor
           Suite 15 East                           Los Angeles, CA 90025
       Indianapolis, IN 46024                    Telephone: (310) 445-2427
     Telephone: (317) 636-1600
                 (Name, Address and Telephone Numbers of Person
  Authorized to Receive Notices and Communications on Behalf of Filing Persons)
                         ------------------------------
                                  Copies to:
   Steven A. Seidman, Esq.                      Scott V. Simpson, Esq.
   Robert B. Stebbins, Esq.             Skadden, Arps, Slate, Meagher & Flom LLP
   Willkie Farr & Gallagher                       One Canada Square
      787 Seventh Avenue                             Canary Wharf
   New York, New York 10019                    London, E14 5DS, England
  Telephone: (212) 728-8000                  Telephone: (44) 20 7519 7000

                         ------------------------------
                            CALCULATION OF FILING FEE
================================================================================
        TRANSACTION VALUATION*                       AMOUNT OF FILING FEE**
--------------------------------------------------------------------------------
            $1,243,725,540                                 $248,745.11
================================================================================
*    Estimated for purposes of calculating the amount of the filing fee only.
     Calculated by multiplying $20.00, the per share tender offer price, by
     62,186,277 shares of Common Stock, consisting of (i) 52,207,756 outstanding
     shares of Common Stock, (ii) 2,269 shares of Common Stock issuable upon
     conversion of 31,767,066 outstanding shares of Series B Non-Participating
     Convertible Preferred Stock, (iii) 7,097,979 shares of Common Stock
     issuable upon conversion of outstanding partnership units of The Taubman
     Realty Group, Limited Partnership ("TRG") and (iv) 2,878,273 shares of
     Common Stock issuable upon conversion of outstanding options (each of which
     entitles the holder thereof to purchase one partnership unit of TRG which,
     in turn, is convertible into one share of Common Stock), based on the
     Registrant's Preliminary Proxy Statement on Schedule 14A filed on December
     20, 2002, the Registrant's Schedule 14D-9 filed on December 11, 2002 and
     the Registrant's Quarterly Report on Form 10-Q for the period ended
     September 30, 2002.
**   The amount of the filing fee calculated in accordance with Regulation
     240.0-11 of the Securities Exchange Act of 1934, as amended, equals 1/50th
     of one percent of the value of the transaction.
|X|  Check the box if any part of the fee is offset as provided by Rule
     0-11(a)(2) and identify the filing with which the offsetting fee was
     previously paid. Identify the previous filing by registration statement
     number, or the Form or Schedule and the date of its filing.


                                                             
Amount Previously Paid:     $248,745.11                            Filing Party:  Simon Property Group, Inc.; Simon Property
Form or Registration        Schedule TO (File No. 005-42862),                     Acquisitions, Inc.; Westfiled America, Inc.
No.:                        Amendment No. 1 to the Schedule TO     Date Filed:    December 5, 2002, December 16, 2002 and
                            and Amendment No. 5 to the                            January 15, 2003
                            Schedule TO

|_|  Check the box if the filing relates solely to preliminary communications
     made before the commencement of a tender offer.
|_|  Check the appropriate boxes below to designate any transactions to which the statement relates.
     |X| third-party tender offer subject to Rule 14d-1.
     |_| issuer tender offer subject to Rule 13e-4.
     |_| going-private transaction subject to Rule 13e-3.
     |_| amendment to Schedule 13D under Rule 13d-2.
         Check the following box if the filing is a final amendment reporting the results of the tender offer: |_|
===================================================================================================================





                                   SCHEDULE TO

                  This Amendment No. 13 amends and supplements the Tender Offer
Statement on Schedule TO originally filed with the Securities and Exchange
Commission (the "Commission") on December 5, 2002, as amended and supplemented
by Amendment No. 1 thereto filed with the Commission on December 16, 2002, by
Amendment No. 2 thereto filed with the Commission on December 27, 2002, by
Amendment No. 3 thereto filed with the Commission on December 30, 2002, by
Amendment No. 4 thereto filed with the Commission on December 31, 2002, by
Amendment No. 5 thereto filed with the Commission on January 15, 2003, by
Amendment No. 6 thereto filed with the Commission on January 15, 2003, by
Amendment No. 7 thereto filed with the Commission January 16, 2003, by Amendment
No. 8 thereto filed with the Commission on January 22, 2003, by Amendment No. 9
thereto filed with the Commission on January 23, 2003, by Amendment No. 10
thereto filed with the Commission on February 7, 2003, by Amendment No. 11
thereto filed with the Commission on February 11, 2003 and by Amendment No. 12
thereto filed with the Commission on February 18, 2003 (as amended and
supplemented, the "Schedule TO") relating to the offer by Simon Property
Acquisitions, Inc., a Delaware corporation (the "Purchaser") and wholly owned
subsidiary of Simon Property Group, Inc., a Delaware corporation ("SPG Inc."),
to purchase all of the outstanding shares of common stock, par value $.01 per
share (the "Shares"), of Taubman Centers, Inc. (the "Company") at a purchase
price of $20.00 per Share, net to the seller in cash, without interest thereon,
upon the terms and subject to the conditions set forth in the Offer to Purchase,
dated December 5, 2002 (the "Offer to Purchase"), and the Supplement to the
Offer to Purchase, dated January 15, 2003 (the "Supplement"), and in the related
revised Letter of Transmittal (which, together with any supplements or
amendments, collectively constitute the "Offer"). This Amendment No. 13 to the
Schedule TO is being filed on behalf of the Purchaser, SPG Inc. and Westfield
America, Inc. ("WEA").

                  Capitalized terms used and not defined herein shall have the
meanings assigned to such terms in the Offer to Purchase, the Supplement and the
Schedule TO, as applicable.

                  The item numbers and responses thereto below are in accordance
with the requirements of Schedule TO.

Item 6.           PURPOSES OF THE TRANSACTION AND PLANS OR PROPOSALS.

                  On February 21, 2003, SPG Inc., the Purchaser and WEA filed
                  Amendment No. 1 to the Preliminary Proxy Statement under cover
                  of Schedule 14A pursuant to the Securities Exchange Act of
                  1934, as amended (the "Amended Preliminary Solicitation
                  Statement") with the Commission relating to the solicitation
                  of agent designations from the Company's shareholders in
                  connection with the calling of a special meeting of the
                  Company's shareholders. A copy of the Amended Preliminary
                  Solicitation Statement is filed herewith as Exhibit (a)(5)(T).

Item 12.          EXHIBITS.

(a)(5)(T)         Amended Preliminary Solicitation Statement in respect of
                  Taubman Centers, Inc. filed by Simon Property Group Inc.,
                  Simon Property Acquisitions, Inc. and Westfield America, Inc.
                  on February 21, 2003.




                                    SIGNATURE

                  After due inquiry and to the best of their knowledge and
belief, the undersigned hereby certify as of February 21, 2003 that the
information set forth in this statement is true, complete and correct.


                           SIMON PROPERTY GROUP, INC.

                           By:   /s/ James M. Barkley
                              ------------------------------------
                              Name:    James M. Barkley
                              Title:   Secretary and General Counsel


                           SIMON PROPERTY ACQUISITIONS, INC.

                           By:   /s/ James M. Barkley
                              ------------------------------------
                              Name:    James M. Barkley
                              Title:   Secretary and Treasurer








                  After due inquiry and to the best of its knowledge and belief,
the undersigned hereby certifies as of February 21, 2003 that the information
set forth in this statement is true, complete and correct.


                           WESTFIELD AMERICA, INC.

                           By:   /s/ Peter R. Schwartz
                              ----------------------------------
                              Name: Peter R. Schwartz
                              Title: Senior Executive Vice President






                                  EXHIBIT INDEX




--------------------------------------------------------------------------------
          EXHIBIT NO.                            DESCRIPTION
--------------------------------------------------------------------------------

                        
(a)(5)(T)                  Amended Preliminary Solicitation Statement in respect
                           of Taubman Centers, Inc. filed by Simon Property
                           Group Inc., Simon Property Acquisitions, Inc. and
                           Westfield America, Inc. on February 21, 2003.