520 Park Avenue and 220 Central Park South, are in which city?
520 Park Avenue: 520 Park Avenue is an American skyscraper under construction on East 60th Street west of Park Avenue in Manhattan, New York City. 220 Central Park South:  It is located in Midtown Manhattan, New York City, in the U.S. state of New York, and is being designed by Robert A.M. Stern Architects.
New York City