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  2. United States Naval Research Laboratory - Wikipedia

    en.wikipedia.org/wiki/United_States_Naval...

    The first modern U.S. radar was invented and developed at NRL in Washington, DC in 1922. By 1939, NRL installed the first operational radar aboard the USS New York, in time for radar to contribute to naval victories of the Coral Sea, Midway and Guadalcanal. NRL then further developed over-the-horizon radar as well as radar data displays. [4]

  3. Main Interior Building - Wikipedia

    en.wikipedia.org/wiki/Main_Interior_Building

    Located in the Foggy Bottom neighborhood, it is bounded by 19th Street NW on the west, 18th Street NW on the east, E Street NW on the north, C Street NW on the south, and Virginia Avenue on the southwest. Although the building takes up the entire block, the address is "1849 C Street, NW" to commemorate the founding of the Department of Interior ...

  4. Streets and highways of Washington, D.C. - Wikipedia

    en.wikipedia.org/wiki/Streets_and_highways_of...

    Facsimile of manuscript of Peter Charles L'Enfant's 1791 plan for the federal capital city (United States Coast and Geodetic Survey, 1887). [2] L'Enfant's plan for Washington, D.C., as revised by Andrew Ellicott in 1792 Thackara & Vallance's 1792 print of Ellicott's "Plan of the City of Washington in the Territory of Columbia", showing street names, lot numbers, depths of the Potoma River and ...

  5. National Register of Historic Places listings in Washington, D.C.

    en.wikipedia.org/wiki/National_Register_of...

    Note that the White House, the Capitol, and the United States Supreme Court Building are recorded in the National Register's NRIS database as National Historic Landmarks, but by the provisions of the Historic Preservation Act of 1966, Section 107 (16 U.S.C. 470g), these three buildings and associated buildings and grounds are legally exempted ...

  6. Neighborhoods in Washington, D.C. - Wikipedia

    en.wikipedia.org/wiki/Neighborhoods_in...

    Neighborhoods in Washington, D.C. The eight wards of Washington, D.C. as of 2023. Neighborhoods in Washington, D.C., the capital of the United States, are distinguished by their history, culture, architecture, demographics, and geography. The names of 131 neighborhoods are unofficially defined by the D.C. Office of Planning. [1]

  7. List of state-named roadways in Washington, D.C. - Wikipedia

    en.wikipedia.org/wiki/List_of_state-named...

    At one time, it was called Canal Street, while a street named Washington Drive existed along a part of the National Mall. Along with Adams Drive, it was converted to a dirt path from the Capitol to the Washington Monument. 0.4 miles (0.64 km) West Virginia Avenue: NE: Street running from K Street NE to New York Avenue NE.

  8. Pan American Union Building - Wikipedia

    en.wikipedia.org/wiki/Pan_American_Union_Building

    Between 1921 and 1922, the building was used for committee and subcommittee hearings throughout the Washington Naval Conference while closely guarded by marines with fixed bayonets. [ 5 ] The building was added to the National Register of Historic Places in 1969, and was designated a National Historic Landmark in 2021, for its architecture and ...

  9. File:WMATA system map.svg - Wikipedia

    en.wikipedia.org/wiki/File:WMATA_system_map.svg

    Add Silver Line for 2014; drop orange-line rush hour extension; add 5 named stations to silver line; extend silver line to Largo Town Center; add 6 unfinished Silver Line stations; extend District of Columbia line slightly to keep silver line inside DC: 20:34, 19 June 2012: 760 × 630 (65 KB) Rfc1394: Correct to place Benning Road station ...