NPS Cultural Resources (Washington, DC) - National Historic Landmarks Program
Before you contact the National NHL Program office, please note:
We do not administer individual National Historic Landmarks. Please contact a property directly to find out if it is open to visitors. Many NHLs are privately owned.
Because of the high volume of email we receive and limited staff resources we appreciate your patience.
For information on contacting specific NHL regions please use our map.
Voice: 202-354-2211
Mailing Address
National Historic Landmarks Program
1849 C Street NW, Mail Stop 2013
Washington, DC 20240
Washington, DC 20240
Last updated: July 2, 2026