E Street Complex

The E Street Complex, also known as the "Navy Hill Complex," the "Potomac Hill Complex," the "Observatory Hill Complex," and the "Pickle Factory," is the historic site of the primary headquarters facility of the Office of Strategic Services, and the first headquarters building of the Central Intelligence Agency. It is geographically located near 23rd Street and E Street in Washington, D.C. This complex was unassuming, appearing to be a mix of normal government offices and apartment buildings to nearby residents and office workers.

The OSS Society and State Department engaged in efforts with the National Park Service to add the E Street Complex to the National Register of Historic Places. On December 14, 2016, the effort was successful.

* Note: The E Street Complex is not to be confused with the Old Naval Observatory. The E Street Complex occupied a portion of the original area of the Old Naval Observatory grounds, with a courtyard at its center.