An intriguing assemblage of geometric forms clad in red Indian sandstone and green aluminum panels, this museum (1986), commonly referred to as MOCA, showcases visual art produced since the 1940s.Cubes, a cylinder and 11 pyramidal skylights define MOCA's two- and three-story office, library and bookstore buildings, designed by prominent Japanese architect Arata Isozaki; these above-ground buildings flank a sun well leading to 25,000sq ft of underground galleries. Changing selections from the growing permanent collection of more than 3,000 paintings, drawings, photographs, sculptures, videos, installations and works in other visual media are exhibited; highlights include pieces by Louise Nevelson, Claes Oldenburg, Jackson Pollock, Mark Rothko, Jasper Johns, Robert Rauschenberg, Frank Stella, Ed Ruscha and Jonathan Borofsky. Most of the museum's display space, however, is devoted to important temporary shows, held here and in almost 45,000sq ft of additional space 10 blocks away at The Geffen Contemporary at MOCA. The Pacific Design Center displays selections from MOCA's architecture and design collection.