Argo Mill & Tunnel

About Argo Mill & Tunnel

Argo Mill & Tunnel is a historic mining and heritage site in Idaho Springs, Colorado, offering guided experiences that explore the Argo Mill and its tunnel, along with gold mining history and milling techniques. The site is a nationally recognized landmark that preserves one of the largest and best-preserved historic gold mills in the American West, providing hands-on, educational experiences about the Colorado gold rush. Visitors can learn about Victorian industrial era engineering, pan for gold, and immerse themselves in the region’s mining heritage with tours and exhibits.