South Dakota is a state in the northwestern United States. It borders North Dakota to the north, Minnesota to the east, Nebraska to the south, and Wyoming and Montana to the west. The capital of South Dakota is Pierre, the largest city is Sioux Falls. Typical for South Dakota is the variety of landscapes, ranging from the Great Plains in the east to the Black Hills in the west. Agriculture is an important industry, with cattle ranching and grain farming in the forefront. Among the state's best-known attractions and landmarks are Mount Rushmore, with portraits of four U.S. presidents, and the Crazy Horse Memorial, a monumental sculpture honoring an Oglala Lakota chief. Other highlights include Badlands National Park, Custer State Park and historic Deadwood.