Galerie Lelong & Co.

This blue-chip, ground-level Chelsea space represents a number of artists who were at the front lines of groundbreaking performance art in that movement's heyday, including Yoko Ono and Ana Mendieta. Emilio Perez, Jaume Plensa, Sean Scully, Kate Shepherd and Ursula von Rydingsvard are just a few of the others names who show here.