Greenwich is a town with a long history. It became the site of a royal palace, the Palace of Placentia, from the 15th century. This was the birthplace of many members of the Tudor dynasty, including Henry VIII and Elizabeth I. The palace became ruined during the English Civil War. It was rebuilt as a hospital by Sir Christopher Wren. These buildings became the a military college in 1873, which lasted until 1998. The town became a popular resort in the 17th century. Many rich houses were built there, such as Vanbrugh Castle (1717). Estates were built above the town centre.