Idaho Springs is the first mountain town you reach heading west from Denver on Interstate 70, about 35 miles from the city at an elevation of 7,540 feet. It was founded after George Jackson found gold along Chicago Creek in 1859 and grew as a mining and health resort — the geothermal waters were considered curative, and the hot springs are still open at Indian Springs Resort.
The town is a useful stop on the road to the high country. It has good restaurants, a main street of independent shops and Victorian-era buildings, and easy access to hiking trails. The Phoenix Gold Mine offers underground tours. Clear Creek, which runs through town, has popular tubing and white-water sections in summer.
Idaho Springs is a natural day trip from Denver: close enough to reach after work, high enough to offer mountain scenery and cool air, and served by frequent bus service from the city.