New Almaden Quicksilver Mining Museum (Casa Grande)

The New Almaden site preserves the 19th-century Casa Grande and structures from the town that grew around California's oldest mercury (quicksilver) mines. The mine complex and village are interpreted by the Almaden Quicksilver Mining Museum and Almaden Quicksilver County Park. Local folklore and regional guided tours recount miner accidents and tell ghost stories tied to the mine tunnels and the former mining village; these accounts are presented as legend rather than established historical fact.