2455 Old Penitentiary Road

Boise, ID 83712 (Next to the Old Pen)

Current Hours

IMMG has now closed for the Season. Check back in Spring for the latest plan to open for 2021.

Free Admission!

Tours and other programs available.

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November 2020

Activities & Hillside Hike (Test only)

November 28 @ 1:00 pm - 4:00 pm

Join us for an hour of activities and a hillside hike. Advance reservations are required.  

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