The United States Military Academy at West Point (also known as USMA, West Point, or Army) is a four-year coeducational federal service academy located at West Point, New York. The academy sits on scenic high ground overlooking the Hudson River, 50 miles (80 km) north of New York City. The entire central campus is a national landmark and home to scores of historic sites, buildings, and monuments. The majority of the campus's neogothic buildings are constructed from gray and black granite. The campus is a popular tourist destination complete with a large visitor center and the oldest museum in the United States Army. Candidates for admission must both apply directly to the academy and receive a nomination, usually from a congressman. Students are officers-in-training and are referred to as cadets. Tuition for cadets is fully funded by the Army in exchange for an active duty service obligation upon graduation. Approximately 1,300 cadets enter the Academy each spring with about 1,000 cadets graduating. Graduates are commissioned as second lieutenants.