Allapattah is becoming the hot hub for private art collections that are open to the public. In addition to Rubell Museum, local developer Jorge M. Pérez unveiled El Espacio 23 in a 28,000-square-foot warehouse. Colombian curator Jose Roca organized its inaugural group show, “Time for Change: Art and Social Unrest.” The venue also offers living quarters for artists-in-residence. 2270 NW 23RD Street; El Espacio 23