Old Montana Prison Museum

Deer Lodge, Powell County, Montana. Museum complex dedicated to law enforcement.

Details

Map. Deer Lodge, Powell County, Montana. Larger map

Where: 1106 Main St., Deer Lodge, MT 59722. Directions
When: Open Daily, October 1, 2026 - December 4, 2026, 10 a.m. - 4 p.m.
Season: Open daily in season; closed each winter (stated as December 5, 2025 - March 12, 2026) and on Thanksgiving Day, November 26, 2026.
Getting there: The Museum's Visitor Center is located at the intersection of Main Street and Texas Avenue.
Fees: One admission covers all 5 attractions: Child (Birth-6) Free; Youth (7-15) $12.00; Adult $20.00; Discounted Rate $16.50; museum members unlimited; receipt good for another visit up to one year.
Access: Limited wheelchairs for the public; request them from staff at the front desk of the Old Montana Prison Complex Visitor Center.
Phone: (406) 846-3111 Ext. 4
Managed by: Powell County Museum and Arts Foundation, a local non-profit membership organization which operates the Old Montana Prison as a Museum.
Established: 1871; Montana's Territorial Prison in Deer Lodge incarcerated its first occupant on July 2, 1871.

Guided and self-guided tours lead through the intimidating Cell House and into the chilling slide bar cells and black box of Maximum Security.