Facility Hours

Missouri Mines State Historic Site

2025-2026 State Holidays

On the following days (actual or observed), staff will not be available and site buildings will be closed: Thanksgiving Day; Nov. 28, 2025; Christmas Eve; Christmas Day; New Year’s Eve; New Year’s Day; Martin Luther King Jr. Day; Lincoln’s Birthday; and Washington's Birthday.

Know Before You Go: Park and Site Status Map

For temporary closures related to weather, stewardship activities and maintenance, as well as temporary trail closures, please visit our Park and Site Status Map.

Historic Site Hours

Summer Hours (On-Season) 

  • April through October
    9 a.m. to 5 p.m., Wednesday through Sunday
    Closed Monday and Tuesday 

Winter Hours (Off-Season) 

  • November 
    9 a.m. to 5 p.m., Wednesday through Sunday 
    Closed Monday and Tuesday
  • December through March 
    9 a.m. to 5 p.m., Saturday and Sunday 

Groups of 15 or more people can schedule tours in advance for any day of the week.