Bingham Canyon Copper Mine, Salt Lake City

Located west of city center in the Oquirrh Mountains, this facility is both the world's oldest and largest open-pit copper mine. In operation since 1863, Bingham Canyon Copper Mine has yielded 12 million tons of copper and a few lucky finds of gold and silver, as well. Today, the pit spans two and one-half miles and sinks one-half mile into the earth. An overlook provides excellent views of the mine, while a visitors' center offers displays and information. Motorists should call ahead to confirm hours before making the long trip out. Open daily 8a.