SUMMIT One

On our list of the best activities in New York.

The entrance sits underground on Vanderbilt Avenue, reached through Grand Central's main concourse, and a mirrored hallway leads to an elevator that opens onto the 91st floor of One Vanderbilt. Kenzo Digital's Air turns one room into a fully mirrored infinity space that repeats the sky and skyline in every direction. Levitation pushes that further: transparent glass boxes cantilevered 1,063 feet above Madison Avenue, with nothing between you and the street below. Apres, the floor's bar, serves a cocktail or mocktail before the elevator back down.