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.


A celebration of Idaho’s mining and geologic history with activities for children and adults. Activities include 12+ activity stations, museum mini tours, hillside hikes, mineral identification, gold panning, food, and MORE! Every child walks away with a certificate and a bag of goodies!!!

$5 Adults, $2 ages 4-17
Free for IMMG Members and kids 3 and younger

Sponsored in part by a grant from the Idaho Humanities Council.