English: Santa Ana Mountains seen from Hidden Hills Estate in Yorba Linda, California, U.S.A. - Yorba Linda is known as the birthplace of Richard Nixon (37th President of the United States). The freeway that goes sideways in this photo is California State Route 91, with the left side being east (toward Riverside; the road that extends upward (southbound) from the 91 is California State Route 241, which is a toll road. The town below the 91 in this photo, i.e., the north side of the 91, is also part of Yorba Linda. The town above the 91 and to the right of the 241, i.e., the southwest corner of the interchange, is Anaheim Hills, which technically belongs to the city of Anaheim.)