The E. Barrett Prettyman Federal Courthouse is a historic building in Washington, D.C. It was built in 1949–50 and currently houses the United States District Court for the District of Columbia, the United States Court of Appeals for the District of Columbia Circuit, and the United States Foreign Intelligence Surveillance Court. Significance The courthouse is one of the last buildings constructed in the Judiciary Square and Municipal Center complex, an important civic enclave since the 1820s. It constitutes an almost entirely unaltered example of early 1950s Stripped Classicism, a non-representational abstraction of the classical style that permeated institutional (especially government) architecture after the Second World War. President Harry S. Truman laid the cornerstone on June 27, 1950, and the building opened in November 1952. It was listed by the National Register of Historic Places and is a contributing property to the Pennsylvania Avenue National Historic Site. It was renamed in 1997 in honor of E. Barrett Prettyman, the former Chief Judge of the U.S. Court of Appeals for the District of Columbia Circuit. Architectural description The courthouse was built on Reservation 10, a site bounded by Constitution Avenue, Third Street, C Street and John Marshall Place. The building faces south across Constitution Avenue towards the Mall, and was erected on the northwest quadrant of its site. This placement accommodated driveways along the south and west facades, and along with the subsequent plazas and landscaping, provided a buffer between the colonnades of the E. Barrett Prettyman Federal Courthouse and the verdant Mall, onto which it opened before I.M Pei's 1970 addition to the National Gallery. With construction starting in 1949, the E. Barrett Prettyman Federal Courthouse was the last addition to a neighborhood of important civic and municipal structures. Known as the Municipal Center, this neighborhood's history of civic activity dates to the 1820 completion of George Hadfield's Old City Hall. In 1932, a formal plan for a Municipal Center, bounded by Constitution Avenue and G Street between 3rd and 6th streets, was designed. By 1934, municipal, police, and juvenile courts had been built on the site; however, the current site of the E. Barrett Prettyman Federal Courthouse was left vacant due to budgetary concerns. The site was used as a parking lot until 1949 when construction on the E. Barrett Prettyman Federal Courthouse commenced on the southeastern corner of the Municipal Center site. While composing the building's exterior, Louis Justement,