Dover contains several sites central to Delaware's political, cultural, and civic history. After the capital moved from New Castle to Dover in 1777, the Old State House was built as the first permanent capitol building in 1787 and finished in 1791; this Georgian-style building with double spiral staircases originally housed both county and state governments, remained a focal point of government and civic life after legislative and executive functions moved to Legislature Hall in 1933, and has been restored to its original appearance. On the Green, the Golden Fleece Tavern site, also known as Battell's Tavern, served as a center for community and government activity during the American Revolution and the early years of independence; before a state capital building existed, the upper assembly's Legislative Council met there, and on December 7, 1787, thirty delegates unanimously ratified the Federal Constitution, making Delaware the First State. The John Bell House, dating from the mid 1700s and the oldest wooden structure in the state capital, was saved from demolition in 2005, restored, and now serves as the interpretive center for the First State Heritage Park. The John Dickinson Plantation was the home of John Dickinson, a founding father, signer of the Constitution, and Penman of the Revolution, and presents the life of the plantation and contrasts among wealthy residents, tenants, poor whites, slaves, and free blacks in Kent County. At Dover Air Force Base, Hangar #1301 became the Air Mobility Command Museum after restoration in the 1990's; the complex had been the site of secret rocket development during World War II and later housed fighter squadrons from the 1950's-1970's. The Schwartz Center for the Arts, originally built in 1904 as the Dover Opera House, became Kent County's performing arts center in 2001. The Dover Public Library, incorporated in 1884 as a private subscription library, became Delaware's first publicly supported library after a 1902 referendum and later returned to Loockerman Street in a new facility in September 2012. Wesley College, founded in 1873 as Wilmington Conference Academy, is identified as Delaware's oldest private college and grew from a preparatory school to a two-year degree program in 1918 and a four-year degree institution in 1978.