The historic John Slaughter Ranch is an official National Historic Landmark, with ranch house and buildings restored to the turn of the 20th century era in Douglas. Also nearby is the San Bernardino National Wildlife Refuge.
Open: Tuesday through Saturday. 9:30 AM - 3:30 p.m.
Admission $5 for adults. Kids are free.
See www.SlaughterRanch.com for more information.