The Official Tower of London Board Game The Challenge. You have been challenged to enter the Tower of London, steal one or more of the Crown Jewels and escape. This is no easy task. The Jewels are housed in the White Tower in the centre of the Fortress. The White Tower is surrounded by walls and towers, beyond which, on the north, east and west sides, lies an uncrossable moat. To the south is the River Thames. Security within the Tower of London is such that you cannot bring anything with you which might asssist you. All the equipment necessary must be gathered while you move around inside the Tower of London looking like an innocent visitor. You may wish to attempt the challenge individually or in teams.