2455 Old Penitentiary Road

Boise, ID 83712 (Next to the Old Pen)

Current Hours

Saturdays Noon-5pm. Special events are on Sundays and by pre-registration only. View CALENDAR to see upcoming events.

Free Admission!

Tours and other programs available.

Field Trips

Sadly, because of the pandemic, we are currently unable to offer field trips. We know that these are one of the most popular offerings of IMMG, but it has not been possible to arrange leaders and trips in the uncertainty of virus restrictions and public concerns about group activities.