rising land values, gentrification, and urban sprawl stretching into outlying countryside. On November 4, 2003, voters approved a greenbelt plan under which the city government bought development rights on agricultural parcels of land adjacent to Ann Arbor to preserve them from sprawling development. Since then, a vociferous local debate has hinged on how and whether to accommodate and guide development within city limits. Ann Arbor consistently ranks in the "top places to live" lists published by various mainstream media outlets every year. In 2008, it was ranked by CNNMoney.com 27th out of 100 "America's best small cities". And in 2010, Forbes listed Ann Arbor as one of the most liveable cities in the United States. Geography and cityscape According to the U.S. Census Bureau, the city has a total area of , of which is land and (2.99%) is water. Most of the water portion of the city is the Huron River. Ann Arbor is road miles west of Ypsilanti. Ann Arbor is also road miles west of Detroit. Ann Arbor Charter Township adjoins the city's north and east sides. Ann Arbor is situated on the Huron River in a productive agricultural and fruit-growing region. The landscape of Ann Arbor consists of hills and valleys, with the terrain becoming steeper near the Huron River. The elevation ranges from about along the Huron River to on the city's west side, near the intersection of Maple Road and Pauline Blvd. Generally, the west-central and northwestern parts of the city and U-M's North Campus are the highest parts of the city; the lowest parts are along the Huron River and in the southeast. Ann Arbor Municipal Airport, which is south of the city at , has an elevation of . Ann Arbor's "Tree Town" nickname stems from the dense forestation of its parks and residential areas. The city contains more than 50,000 trees along its streets and an equal number in parks. In recent years, the emerald ash borer has destroyed many of the city's approximately 10,500 ash trees. The city contains 157 municipal parks ranging from small neighborhood green spots to large recreation areas. Several large city parks and a university park border sections of the Huron River. Fuller Recreation Area, near the University Hospital complex, contains sports fields, pedestrian and bike paths, and swimming pools. The Nichols Arboretum, owned by the University of Michigan, is a arboretum that contains hundreds of