This 11.8-acre site, encompasses 11 historic buildings, located on 23rd Street, NW, across from the Department of State’s headquarters, is one of the highest points in the city’s original plan and became the home of the country’s original Naval Observatory, completed in 1844 and now a National Historic Landmark. The Observatory became obsolete when a new observatory was erected off Massachusetts Avenue. During World War II, the site was occupied by the Office of Strategic Services which subsequently became the Central Intelligence Agency.
The CIA moved to its new headquarters in Langley, VA in 1961, but the Navy maintained a presence on the site until 2012. In 2005 the Department of Defense declared the site surplus and transferred it to the Department of State for its consolidation efforts in eliminating numerous rental facilities. With the support of the Committee of 100, the DC Historic Preservation Review Board in 2016 designated the site as the Observatory Hill Historic District, which in 2017 was listed on the National Register of Historic Places.
In 2014 consultations were initiated to develop a master plan for the State Department’s use of the site, which initially contemplated the erection of 1.2 million sq. ft. of new space in several massive office buildings. The Observatory is to be renovated and used for special events and meetings. The Committee of 100’s position is that as many of the historic buildings as possible should be preserved and reused, and that new buildings should be located and scaled to respect and complement the historic structures and landscape. The Committee has actively participated and commented in consultation meetings on the development of the site. There has been some progress in the reduction in the scale of proposed development and the location and size of new structures on the site.
In the absence of Congressional funding, there has thus far been no further progress in development of the site.