The White Tower is a historic fortress located in London, England. It is part of the Tower of London complex and was built in the 11th century by William the Conqueror. The tower served as a royal palace, prison, and treasury, and it is known for its distinctive white stone, which gives it its name. The White Tower is an important symbol of British history and architecture. It houses the Crown Jewels and features exhibits on the history of the Tower of London. The structure is a UNESCO World Heritage Site and attracts millions of visitors each year.