Observatory Hill (NRIS 100000479)

Address: 23rd & E Sts., NW., Washington, D.C.. County/parish: D.C..

Added to the National Register of Historic Places January 12, 2017.


  • Flagg, Ernest
  • Navy Bureau of Yards and Docks
  • Perry, Roland Hinton
  • Supervising Architect of the Treasury
  • Wood, Donn and Deming

Significant persons associated with this site:

  • Donovan, William J.
  • Dulles, Allen W.
  • Hall, Asaph
  • Maury, Matthew Fontaine

National Park Service documentation: https://npgallery.nps.gov/AssetDetail/NRIS/100000479