POWER OF ATTORNEY


		Know all by these presents, that the undersigned hereby
constitutes and appoints each of Jonathan B. Weller, David J.
Bryant and Bruce Goldman as the undersigned's true and lawful
attorney-in-fact to:

	(1)	execute for and on behalf of the undersigned, in the
undersigned's capacity as an officer and/or trustee of
Pennsylvania Real Estate Investment Trust (the "Company"), Forms
3, 4, and 5 in accordance with Section 16(a) of the Securities
Exchange Act of 1934 and the rules thereunder, as amended;

	(2)	do and perform any and all acts for and on behalf of
the undersigned which may be necessary or desirable to complete
and execute any such Form 3, 4, or 5 (and any amendments thereof)
and timely file such form with the United States Securities and
Exchange Commission and any stock exchange or similar authority;
and

	(3)	take any other action of any type whatsoever in
connection with the foregoing which, in the opinion of the
attorney-in-fact, may be of benefit to, in the best interest of,
or legally required by, the undersigned, it being understood that
the documents executed by the attorney-in-fact on behalf of the
undersigned pursuant to this Power of Attorney shall be in such
form and shall contain such information as the attorney-in-fact
may approve in the attorney-in-fact's discretion.

	The undersigned hereby grants to each attorney-in-fact full
power and authority to do and perform any and every act and thing
whatsoever requisite, necessary, or proper to be done in the
exercise of any of the rights and powers herein granted, as fully
to all intents and purposes as the undersigned might or could do
if personally present, with full power of substitution or
revocation, hereby ratifying and confirming all that each
attorney-in-fact, or the attorney-in-fact's substitute or
substitutes, shall lawfully do or cause to be done by virtue of
this power of attorney and the rights and powers herein granted.
The undersigned acknowledges that each of the foregoing
attorneys-in-fact, in serving in such capacity at the request of
the undersigned, is not assuming, nor is the Company assuming,
any of the undersigned's responsibilities to comply with Section
16 of the Securities Exchange Act of 1934.

	This Power of Attorney shall remain in full force and effect
until the undersigned is no longer required to file Forms 3, 4,
and 5 with respect to the undersigned's holdings of and
transactions in securities issued by the Company, unless earlier
revoked by the undersigned in a signed writing delivered to each
attorney-in-fact.

	IN WITNESS WHEREOF, the undersigned has caused this Power of
Attorney to be executed as of this 29th day of July, 2004


					By:  /s/ Stephen B. Cohen

					Name:  Stephen B. Cohen