ST. LOUIS (KSDK) - The Saint Louis Art Museum will close Sunday at 5 p.m.for two weeks to prepare for the opening of the Sir David Chipperfield-designed East Building.

The expanded museum will reopen with a two-day public celebration starting on June 29.

The opening of the East Building will increase gallery and public space by 30 percent and house 21 new galleries for teh collection and temporary exhibitions. The inaugural exhibitions in the East Building will feature 230 works from the permanent collection, 55 of which have not been on view for at least 20 years. The expansion project also enabled the renovation and reinstallation of the iconic 1904 building. More than 1,450 works of art have been reinstalled in 68 galleries; approximately one-third of these works have not been on view for at least 20 years.

Following a ribbon-cutting ceremony at 9:30 a.m. on June 29, the museum will be open from 10 a.m. to 10 p.m. and from 10 a.m. to 5 p.m. on June 30. From 10 a.m. to 6 p.m. on June 29, and from noon to 5 p.m. on June 30, the public is invited to explore the World of Art, an outdoor celebration of the expansion with free hands-on art projects and performances organized by local cultural organizations and arts groups, as well as food booths on Fine Arts Drive and in the east parking lot. On the evening of June 29, the opening night celebration will continue with musical performances organized by Jazz St. Louis.