One year after breaking ground in Costa Mesa, the Orange County Museum of Art's new home is scheduled to top out at an official ceremony at the Segerstrom Center for the Arts.

OCMA, which is currently housed out of a temporary space at South Coast Plaza in Santa Ana, is slated to move into its new home in 2021.  The 52,000-square-foot building, located near the intersection of Anton Boulevard and Avenue of the Arts, is divided between exhibition space and multipurpose areas dedicated for educational courses and performances.  Other components of the project include a gift shop, a cafe, and administrative offices.

Morphosis is designing the new OCMA building, which is composed of a steel skeleton with curving and jagged forms.  A rooftop sculpture terrace will sit above the museum, providing space for events with up to 1,000 attendees.  Its interior will include an atrium and lobby, naturally lit through windows overlooking the roof terrace.

The more than $73-million project represents a roughly 50 percent expansion of OCMA, relative to its original home in Newport Beach.

The project is the latest in a series of museum revamps and expansion in Southern California, joining a controversial rebuild of LACMA, the Lucas Museum of Narrative Art, and the Academy Museum of Motion Pictures.

Separately, Morphosis is also designing the proposed Korean American National Museum in Koreatown.