Almaden Quicksilver Mining Museum

21350 Almaden Road, San Jose, CA 95120

The museum has collections related to San Jose's mercury mines, which began operation in 1845 when the area was known as New Almaden. Mercury (also known as quicksilver) was used in gold and silver mining, and the New Almaden mines thus played a role in the Gold Rush. It's located within Casa Grande, a structure maintained by Santa Clara County.