2455 Old Penitentiary Road

Boise, ID 83712 (Next to the Old Pen)

Current Hours

IMMG reopens for the 2021 season on May 1st, 1-4pm.

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.