Salt Tower
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The Salt Tower is a tower located at the Tower of London was built by Henry III in about 1235. John Baliol, King of Scotland, was imprisoned here from 1296 to 1299 and during the reign of Queen Elizabeth I several Jesuit priests were held here.
It has a large amount of graffiti scrawled by prisoners over the centuries.[1][2] Several ghost stories are associated with the tower[3] and it alleged that even dogs refuse to enter the building.