The Arsenal is used by the Kremlin Regiment which forms the Russian president's main security service. Although this building is closed to the public, the nearby armory building is open as a museum which displays weapons, jewelry, and personal items that once belonged to the tsars.
The Tsar Cannon, a large 20 foot long cannon that was made in 1586, is also on display near the armory. It holds the record for the \"largest bombard by caliber\" in the world.
The Tsar Bell, a large 22 foot diameter bronze bell, is also on display near the Ivan the Great Bell Tower. The bell was commissioned by Empress Anna in 1733 and while casting was still in progress a fire broke out that caused the guards to throw water on the bell. A huge slab broke off and as a result the bell has never been hung or rung, but remains on display as a tourist attraction.