The Tower of London

His Majesty's Royal Palace and Fortress of the Tower of London is a historic citadel and castle on the north bank of the River Thames in central London. Founded toward the end of 1066 as part of the Norman Conquest, the White Tower — which gives the site its common name — was built by William the Conqueror in 1078. Over subsequent centuries the complex developed into a multi-building castle set within two concentric rings of defensive walls and a moat, with major phases of expansion under monarchs including Richard I, Henry III, and Edward I. The supplied sources describe the Tower's architectural and administrative significance and its identity as a royal palace and fortress. The provided source materials contain no accounts of paranormal phenomena, named spirits, apparitions, or witness testimony associated with the Tower of London. Archive materials included in the research notes are live-camera recordings for Tower Bridge and do not supply information about supernatural claims at the Tower. Because the available sources are silent on hauntings or related folklore, this entry does not assert any reported paranormal events or entities beyond what is present in the cited documentation. Culturally and historically, the Tower is significant as a Norman foundation and medieval royal site; the sources used here emphasize those aspects rather than any supernatural tradition.