There is NO FEE to enter Fort Union National Monument. Enjoy your visit!
If you plan to visit other parks with an entrance fee, learn more about the America the Beautiful - National Parks and Federal Recreational Land Pass and fee-free days in the national parks.
The National Park Service will offer the following FEE FREE DAYS in 2017:
January 16 – Martin Luther King, Jr. Day
February 20 - Presidents Day
April 15-16 and April 22-23 – National Park Week weekends
August 25 - National Park Service Birthday
September 30 – National Public Lands Day
November 11-12 – Veterans Day Weekend