Jack London State Historic Park, Literary memorial park in Sonoma County, US.

Jack London State Historic Park lies on the eastern slope of Sonoma Mountain near Glen Ellen. Its core is the Beauty Ranch land London bought in 1905: the Winery Cottage where he died in 1916, the stone winery ruins beside it, and the burnt shell of the 15,000-square-foot Wolf House, begun in 1910 and destroyed by fire on August 22, 1913. Charmian London's 1919 House of Happy Walls, a smaller version of the Wolf House, now holds the visitor center and museum, and the graves of Jack and Charmian lie on a hillside.

The writer purchased the property in 1905 and lived here until his death in 1916. A large stone house he commissioned burned down shortly before completion, leaving only ruins visible today.

London called the property Beauty Ranch, and the stone winery ruins beside the cottage now serve as an open-air stage: the Transcendence Theatre Company performed there on 1 October 2011 to benefit the park's nonprofit operator. Charmian London's 1938 will asked that her home, the House of Happy Walls, become a museum to Jack and herself, and it now holds the visitor center and exhibits.

More than 20 miles (32 km) of trails are open for walking, cycling, and riding. Some paths stay level through the lowlands, while others climb to higher ground for wider views.

An unusual pig farming facility shows how the owner experimented with technical innovations. Individual pens still have the old automatic feeding systems that were advanced for their time.