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A proven synergy between a thoughtful developer and a renowned architect.


As founder and Senior Partner of Robert A.M. Stern Architects (RAMSA), Mr. Stern personally directs the design of each of the firm’s projects. He is Fellow of the American Institute of Architects, and received the AIA New York Chapter’s Medal of Honor in 1984 and the Chapter’s President’s Award in 2001. Mr. Stern is the J.M. Hoppin Professor of Architecture and Dean of the Yale School of Architecture. He has lectured extensively in the United States and abroad on both historical and contemporary topics in architecture, and is the author of many books. His work is in the permanent collections of the Museum of Modern Art, the Metropolitan Museum of Art and the Centre Pompidou, among other museums.


520 Park Avenue developers Arthur W. Zeckendorf and William Lie Zeckendorf are co-owners, co-founders and co-chairmen of Zeckendorf Development, which they founded in 1992. In addition to being principals of the firm, they are also owners and co-chairmen of Terra Holdings, LLC, a company that owns and operates several real estate service firms including Brown Harris Stevens and Halstead Property. Among some of their most notable completed projects are 15 Central Park West, the Robert A.M. Stern-designed neo-classical building that broke all North American records for residential sales, 50 United Nations Plaza, a 43-story condominium designed by Foster + Partners, and 18 Gramercy Park, a newly designed modern classic that evokes the luxury and grandeur of New York's finest cooperative landmarks.


Park Sixty LLC is a private company operated by the New York-based family of Morris Nasser. The family’s real estate portfolio is developed and managed by Rafael and Ezra Nasser, principals of Nasser Freres LLC. The brothers are both experienced real estate investment professionals with over 30 years of combined New York property experience.


Global Holdings Inc. is a private U.S.-based real estate investment company founded in the mid-1980s and led by Eyal Ofer. In addition to 520 Park Avenue, the firm partnered with Zeckendorf Development on 15 Central Park West, 18 Gramercy Park and 50 United Nations Plaza.