20 Massachusetts Ave. in Washington, D.C is a 1970-circa structure first renovated in the 1980s to attract a new government tenant. The renovation replaced precast concrete panels on the first two floors with a new metal and glass wall system. The federal office building is again now being renovated as a mixed-use development. Located four blocks from the U.S. Capitol and directly adjacent to regional transit hub Union Station, the adaptive-reuse project intends to create a cultural hub for the neighborhood. The building centers the corridor was established by Pierre L’Enfant’s 1791 Master Plan for the District of Columbia. (Leo A. Daly, Boris Feldblyum)
20 Massachusetts Ave
