Fort Humboldt State Historic Park is a California state park, located in Eureka, California, United States. Its displays interpret the former U.S. Army fort, which was staffed from 1853–1870, the interactions between European Americans and Native Americans in roughly the same period, logging equipment and local narrow gauge railroad history of the region. Within the collection, there are trains, logging equipment, including a fully functional Steam Donkey engine, and an authentic Native American dug-out canoe. The Fort overlooks Humboldt Bay from atop a bluff. The North Coast regional headquarters of the California State Parks system is located onsite.

Eureka is a city and the county seat of Humboldt County, located on the North Coast of California. The city is located on U.S. Route 101 on the shores of Humboldt Bay, 270 miles (435 km) north of San Francisco and 100 miles (161 km) south of the Oregon border. At the 2020 census, the population of the city was 26,512. As of the 2010 census, the population of Greater Eureka was 45,034.