Greenwich Castle was a hunting lodge used during the reign of Henry VIII, located in Greenwich Park, in Greenwich, England. The Royal Observatory, Greenwich now stands on the site. Greenwich Castle was apparently a favourite place for Henry VIII to house his mistresses, as it was within easy travelling distance of Greenwich Palace at the foot of the hill.[1]
The castle was previously known as Duke Humphrey's Tower after its builder, Humphrey, Duke of Gloucester, a younger brother of King Henry V.