Brookings Quadrangle, the site of the all-university Commencement ceremony each spring, comprises Brookings Hall to the east, Ridgley Hall to the west, Cupples Hall I to the north and Busch Hall to the south.
The cornerstone was laid on November 3, 1900. Along with several other buildings on campus, Brookings Hall is listed with the National Registry of Historic Places. Formerly known as University Hall, and leased from the university for use as the Administration Building of the Louisiana Purchase Exposition, its name was changed to Brookings Hall on June 28, 1928, when Mr. Brookings became President Emeritus of the Board of Directors. The name was officially changed again on April 12, 1929 to Robert S. Brookings Hall.