Three notable hills are in Riverside's scenic landscape: Box Springs Mountain, Evans (Jurupa) Hill and Tecolote Hill; all of which are preserved open spaces. South of Riverside is Lake Mathews. There is also the well-known landmark/foothill, Mount Rubidoux, which is next to the Santa Ana River and one of the most noticeable landmarks in the downtown area. This foothill is the dividing line between the town of Rubidoux and the city of Riverside.