The Estudillo Mansion is on the U.S.National Register of Historic Places, and was built in 1884. It’s a wonderful old home that has a museum on the grounds and a sister home, that was also built for the family, located in the hills several miles away. It is abandoned and rumored to be haunted. Both what is left of what used to be a 35,000 acre land grant given in 1842. It is located in the San Jacinto Valley area of Southern California.