In contrast to the HUD Building, the United States Department of Transportation (DOT) Building, across 7th Street, represents a commercial building type—a speculative office building that is leased to the federal government. Many such speculative buildings are
The building was designed by Edward Durell Stone, whose Kennedy Center was taking form in Foggy Bottom, and is based on a large rectangular plan, the center of which is cut out to form a courtyard plaza. On each side, an opening at the base allows for easy circulation between street and courtyard. The walls are made up of narrow vertical ribbons of windows separated by equally narrow piers, each sheathed in a white marble veneer from the same Carrara quarry in Italy as that of the Kennedy Center; the broadly overhanging eaves also echo the design of the performing arts center.