Conceived of in 1966 and only realized in 2007, Lucas Samaras’ ‘Doorway’ reverses Yayoi Kusama’s mirrored interiors by putting mirrors on the exterior to reflect visitors and surroundings. At Pace Gallery, these include banks of photos from the artist’s life and a frieze of self-portraits in which Samaras in a flowing white beard and long hair resembles Rip Van Winkle or, after 40 years of using himself as subject matter, god of the selfie. (Through June 27th).