Central City was once known as the Richest Square Mile on Earth, while neighboring Black Hawk was the City of Mills. They and their neighbors played major roles in Colorado's social, political, and economic development. Through the Gilpin Historical Society's museums and tours you can see the Mountain Submarine, learn the true story of the infamous Face on the Barroom Floor, walk through a house virtually frozen in time, and experience the colorful history of Gilpin County. We're just a short drive from Denver.