The Museum of Contemporary Art, Los Angeles (MOCA) is a contemporary art museum with three locations in greater Los Angeles, California. The main branch is located on Grand Avenue in Downtown Los Angeles, near Walt Disney Concert Hall. MOCA's original space, initially intended as a "temporary" exhibit space while the main facility was built, is now known as the Geffen Contemporary, in the Little Tokyo district of downtown Los Angeles. The Pacific Design Center facility is in West Hollywood. The museum's exhibits consist primarily of American and European contemporary art created after 1940. Since the museum's inception, MOCA's programming has been defined by its multi-discipliner. The MOCA downtown Los Angeles location is home to almost 5,000 artworks created since 1940, including masterpieces by classic contemporary artists, and inspiring new works by emerging and mid-career artists from Southern California and around the world. The MOCA is the only museum in Los Angeles devoted exclusively to contemporary art. In 1986, the celebrated Japanese architect Arata Isozaki, who had never worked on a project in the United States before, completed the downtown location's sandstone building to international critical and public acclaim, marking a dramatic achievement in the contemporary art world and heralding a new cultural era in Los Angeles. Its chief exhibition spaces are under the courtyard level, lit from above by groups of pyramidal skylights.