It is an impressive building, 30 meters high (White Tower) and 3.6 m thick. It is surrounded by several rows of walls with towers and a moat. The oldest part is the White Tower, which houses the royal arsenal of weapons. The place of execution was located in Tower Green. Black granite slabs commemorate the place where the scaffold stood. Only crowned heads were beheaded here, aristocrats at Tower Hill, and ordinary mortals at Marble Arch.
