Arts & cultureMore about this venueJames F. Bailey Assay Office Museum 4.8Free
Assay Office Museum Open House
DateSep 19, 2026 · 11:00 AM – 3:00 PM (MDT)
PriceFree
AgesAll ages
Tour a historic mining-era assay office to see original tools and learn about the region's mining heritage.
Join us for a special open house at the Assay Office Museum , a surviving structure from the heyday of hard rock mining in the Colorado mountains. Discover how miners once tested ore for valuable metals using assaying. Explore original tools and historical artifacts and hear stories from the mining boom era. Learn about the families who lived and worked in this rugged landscape and helped shape the region’s rich mining heritage. This is a must-visit for anyone passionate about mining history, geology, or Colorado history. No registration needed.
Kid-friendlymuseum exhibit
historymuseumfamilyfree
Hosted at
Assay Office Museum
6352 Fourmile Canyon Dr, Boulder, CO
