
Exhibit 99.1

SL GREEN REALTY CORP.

For Further Information, Contact:
Marc Holliday
President
Michael W. Reid
Chief Operating Officer
(212) 594-2700

FOR IMMEDIATE RELEASE


SL GREEN REALTY CORP. ANNOUNCES JOINT

VENTURE WITH SITQ IMMOBILIER ON ONE PARK AVENUE



NEW YORK, May 29, 2001 - SL Green Realty Corp. (NYSE: SLG) announced today
that it has entered into a joint venture with respect to the ownership of SL
Green's interests in One Park Avenue with SITQ Immobilier, a subsidiary of
Caisse de depot et placement du Quebec, the largest pension fund in Canada
with over Cdn $125 billion in assets under management.



Under the terms of the joint venture, SITQ Immobilier has purchased a 45%
interest in SL Green's interests in the property based upon a gross aggregate
price of $233.9 million and yielding proceeds of approximately $41.0 million,
inclusive of closing costs and reimbursements. The transaction enables SL
Green to free up capital for additional high growth opportunities while
enhancing the yield on its investment interests in One Park Avenue through
various fee arrangements with respect to the investment.



One Park Avenue is a 20-story office building with approximately 913,000
square feet located on the entire block front on Park Avenue between 32nd and
33rd Streets.



In making the announcement, Marc Holliday, President of SL Green, said
"We are delighted to enter into a long-term strategic partnership
with SITQ Immobilier, a major

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international real estate company who shares our management philosophy of value
creation and our belief in the dynamic growth of the Midtown Manhattan office
market."



Denis Epoh, Director of Investments of SITQ Immobilier, added, "We are pleased
to make our first investment in the Manhattan office market with SL Green as
our partner. We believe that our partnership represents the ideal combination
of their local market expertise and our global perspective and experience."



Stonehenge Partners advised SITQ Immobilier on this transaction.  SL Green was
advised by Schonbraun, Safris McCann and Bekritsky & Co., L.L.C.



SL Green Realty Corp. is a self-administered and self-managed real estate
investment trust ("REIT") that primarily owns, manages, leases, acquires and
repositions office properties in Manhattan.



This release contains forward-looking information based upon the
Company's current best judgement and expectations. Actual results could vary
from those presented herein. The risks and uncertainties associated with the
forward-looking information include the strength of the commercial office real
estate market, competitive market conditions, general economic growth,
interest rates and capital market conditions. For further information, please
refer to the Company's filings with the Securities and Exchange Commission.



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