Surprise sits in the West Valley of the Phoenix area, a young desert city that grew from farmland into a large suburb. Surprise Stadium hosts two major league baseball teams for spring training each year, filling the ballpark with fans from across the country. The White Tank Mountain Regional Park, just west of the city, offers desert trails, petroglyphs, and views across the Valley. Ottawa University Arizona opened a campus here, and the city's recreation centers, libraries, and parks give it a family focus.