The Tower of London, is officially Her Majesty’s Royal Palace and Fortress of the Tower of London, is a historic castle on the north bank of the River Thames in central London. The Tower of London has played a prominent role in English history. The Tower has served variously as an armory, a treasury, a menagerie, the home of the Royal Mint, a public record office, and the home of the Crown Jewels of England. In the late 15th century, the castle was the prison of the Princes in the Tower. Under the Tudors, the Tower became used less as a royal residence.