MOCA occupies a red-brick building crowned by a glass pyramid designed by the Japanese architect Arata Isozaki. Rotating exhibitions allow visitors to admire the museum's rich collection of almost 5 000 works of art (paintings, photos, sculptures etc) by internationally renowned artists such as Roy Lichtenstein, Mark Rothko, Robert Rauschenberg, Alberto Giacometti, Piet Mondrian, Andy Warhol, Jackson Pollock, Jean-Michel Basquiat and David Hockney.