The Idaho Springs Downtown Commercial District includes Early Commercial architecture in Idaho Springs, Colorado. The historic district was listed on the National Register of Historic Places in 1984. The listing includes 46 contributing buildings on 9 acres (3.6 ha). The district is roughly bounded by Center Alley, 14th Ave., Riverside Dr., and Idaho St. in Idaho Springs. It is less than .5 miles (0.80 km) from where George A. Jackson discovered gold in on January 7, 1859, setting off a gold rush which brought people to Denver and Colorado. * * * * Hanchett Building in Idaho Springs, Colo.