Question: At 10,152 feet in the central Rockies, what former silver-mining boomtown is the highest incorporated city in the United States?

Answer: Leadville. Perched at 10,152 feet in the central Rocky Mountains, it is the highest incorporated city in the United States. Gold drew the first prospectors in the 1860s, but a silver boom in the late 1870s made Leadville one of Colorado’s great mining cities.