It received its namesake from the New Almaden Quicksilver Mines, the oldest and most-productive mercury mines in the United States. The mines have since been converted into the recreational site of Almaden Quicksilver County Park.
Almaden is known primarily as an upper-middle-class neighborhood with many families taking advantage of some of the best schools in San Jose. Hiking trails abound and an IBM research facility is located in the southern portion.
Key attractions in Almaden include Almaden Quicksilver County Park, New Almaden Quicksilver Mining Museum, Calero Park and Lake, and Almaden Lake Park. Almaden is also home to the Almaden Art & Wine Festival, Almaden Valley Harvest Festival, and New Almaden Music Festival.