Great Basin District office is the administrative office for the Antelope Valley California Poppy Reserve, Arthur B. Ripley Desert Woodland State Park, Antelope Valley Indian Museum, Saddleback Butte State Park, Tomo-Kahni State Historic Park, Red Rock Canyon State Park, Onyx Ranch SVRA, Hungry Valley SVRA, Fort Tejon State Historic Park, Tule Elk State Reserve, and Col. Allensworth State Historic Park.