Sutter's Fort State Historic Park

Sutter's Fort was a 19th-century agricultural and trade colony in the Mexican Alta California province. It was built in 1839 and originally called New Helvetia (New Switzerland) by its builder John Sutter. The fort was the first non-Indigenous community in the California Central Valley. The fort is famous for its association with the Donner Party, the California Gold Rush, and the formation of Sacramento. It is notable for its proximity to the end of the California Trail and Siskiyou Trails, which it served as a waystation.

After gold was discovered at Sutter's Mill (also owned by John Sutter) in Coloma, the fort was abandoned. The adobe structure has been restored to its original condition and is now administered by California Department of Parks and Recreation. It was designated a National Historic Landmark in 1961.

The Main Building of the fort is a two-story adobe structure built between 1841 and 1843. This building is the only original surviving structure at the reconstructed Sutter's Fort State Historic Park. It was in here on January 28, 1848 that James Marshall met privately with Sutter in order to show Sutter the gold that Marshall had found during the construction of Sutter's sawmill along the American River only four days earlier. Sutter built the original fort with walls 2.5 feet (0.76 m) thick and 15 to 18 feet (5.5 m) high. Pioneers took residence at Sutter's Fort around 1841. Following word of the Gold Rush, the fort was largely deserted by the 1850s and fell into disrepair.

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