For hundreds of years 50 Berkeley Square was said to be the most haunted house in London. The house, in which Prime Minister George Canning died in 1827, is currently occupied by the antiquarian and rare booksellers, Maggs Bros. The house has well documented sightings of ghosts which have included a little girl and a young woman. A grotesque man with a gaping mouth is also said to have haunted this building for many years.