Marshall Gold Discovery State Historic Park is located in Coloma, California. It is the site where gold was first discovered in 1848 by James Marshall, which sparked the California Gold Rush. The park features historical exhibits, trails, and the original sawmill where the discovery took place. Visitors can explore the park's rich history through guided tours and educational programs. The area includes a museum that showcases artifacts from the Gold Rush era, as well as opportunities for gold panning. The park is a popular destination for those interested in California's history and outdoor activities.