Boulder County

Assay Office Museum Open House
2025-10-18 11:00 - 15:00 (America/Denver) | Assay Office Museum, 6352 Fourmile Canyon Dr, Boulder, CO, 80302
Stop by the unique Assay Office Museum on this open house day. Learn about assaying, hard rock mining, and the families in the area from long ago.
Registration not required.
