We are located at

2455 Old Penitentiary Road

Boise, ID 83712 (Next to the Old Pen)

Current Hours

We hope to have Special Events this winter. Click "CALENDAR" below to see any upcoming events. Regular hours will resume in Spring 2022. Check this website for updates.

Free Admission!

Tours and other programs available.

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Geode Cracking

July 18, 2021 @ 10:00 am - 1:00 pm

Crack a geode and marvel at the wonders within. The most marvelous part…you get to take your geode home with you!

Join us at the museum to crack geodes from around the world. Who would believe that a rock could hold such a surprise inside! The event will focus on children, but we will have enough geodes for adults, too. Our Master Geode-cracker, Truman Keith, is coordinating his experienced team and they will cut geodes using a giant pipe-cutter. It’s interesting to watch and inspiring to see the excitement on the children’s faces.  There will also be a geologist available to answer questions about geodes. This event is by registration only, so register now to reserve your spot: Geode Cracking Registration.


July 18, 2021
10:00 am - 1:00 pm
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