A new wrap-around building, and east and west wings were constructed. Designed by Rafael Viñoly, this $350 million project doubled the museum's size to 592,000 square feet (55,000 m2). To integrate the new east and west wings with the Breuer building to the north, a new structure was built along the south side of the 1971 addition, creating extensive new gallery space on two levels, as well as providing for a museum store and other amenities.