Three Forks of the Missouri

Also known as: Gallatin City Buildings, Missouri Headwaters State Park
NE of Three Forks on the Missouri River, Missouri Headwaters State Monument, Three Forks, Montana


Confluence of the Madison & Jefferson Rivers.

Photo taken by Jim Allen in Sept. 2017



Street View 


Captain William Clark of the Lewis and Clark Expedition, first European-American to discover this spot, concluded that the Missouri River originated where the Three Forks joined. -- National Historic Landmark statement of significance, October 9, 1960

National Register information 

Posted to the National Register of Historic Places on October 15, 1966
Reference number
Areas of significance
Archeology - Prehistoric; Transportation; Exploration/Settlement; Architecture
Level of significance
Evaluation criteria
A - Event; B - Person
Property type
Historic functions
Hotel; Single dwelling; Secondary structure
Current functions
Park; Agricultural fields
Periods of significance
1875-1899; 1850-1874; 1800-1824
Significant years
1805; 1864; 1890
Number of properties
Contributing buildings: 6
Contributing structures: 1
Contributing sites: 1
Non-contributing buildings: 1


19th Century (38,026)
Brick (42,466)
Built 1805 (83)
Built during 1800s (1,279)
Gallatin County, Montana (134)
Have Street View (48,285)
House (27,795)
Montana (2,299)
National Historic Landmark (2,198)
Site (382)
Stucco (7,816)
Three Forks, Montana (7)

Update Log 

  • November 24, 2021: New Street View added by Bill Eichelberger
  • October 13, 2017: New photos from Jim Allen
  • January 4, 2017: New photos from Jim Allen
  • November 22, 2016: Updated by Jim Allen: added coordinates