James Lick, a native of Pennsylvania, was a piano maker by trade. After accumulating $30,000 in South America, he came to San Francisco in 1848. In 1855, Lick built a four-stone, water-powered flour mill on the Guadalupe River. The Mansion was constructed in 1858 and contains a lovely mahogany interior. Lick's estate established the observatory on Mount Hamilton, where Lick is buried.