Federal Triangle In the mid-1910s, the federal government acquired land on Pennsylvania Avenue between 14th and 15th Streets and several blocks south, but no demolition or construction was conducted. In the 1920s, the government began planning the redevelopment of the Murder Bay area. This became a major construction project of 10 large city and federal office buildings, which would eventually be called
Federal Triangle. The entire Murder Bay area was replaced with government and other commercial buildings. In 1926, a contract was issued for razing several buildings along Constitution Avenue to make way for the new
Internal Revenue Service Building. In 1927,
Congress began to appropriate funds for additional land acquisition. The land purchases took several years to complete. In the late 1920s, construction of additional buildings began, with completion nearly complete by 1931. In 1932, the
Department of Commerce Building opened. In 1935, the
Department of Justice,
Department of Labor,
Interstate Commerce Commission and
National Archives buildings opened.
Pennsylvania Avenue National Historic Site On March 25, 1965, President
Lyndon Johnson issued
Executive Order No. 11210, which established the Temporary Commission on Pennsylvania Avenue. The
Pennsylvania Avenue National Historic Site was established on September 30, 1965, and culturally, aesthetically, and historically significant structures and places were given historic status protection. ==External links==