Exhibit 32.1

                    CERTIFICATION OF CHIEF EXECUTIVE OFFICER
              PURSUANT TO SECTION 906 OF SARBANES-OXLEY ACT OF 2002

I, Ronald Rubin, the Chief Executive Officer of Pennsylvania Real Estate
Investment Trust (the "Company"), hereby certify, pursuant to 18 U.S.C. Section
1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002,
that:

(1) the Form 10-Q of the Company for the quarter ended September 30, 2004 as
filed with the Securities and Exchange Commission on the date hereof (the "Form
10-Q"), fully complies with the requirements of Section 13(a) or 15(d) of the
Securities Exchange Act of 1934 (15 U.S.C. 78m or 78o(d)); and

(2) the information contained in the Form 10-Q fairly presents, in all material
respects, the financial condition and results of operations of the Company.



Dated: November 9, 2004                          /s/  Ronald Rubin
                                                      ------------
                                                 Name: Ronald Rubin
                                                 Title: Chief Executive Officer