2 Best Sights in Moscow, Russia

More than 180 feet high, the Corner Arsenal (formerly Sobakina) Tower at the northernmost part of the thick battlements that encircle the Kremlin was an important part of the Kremlin's defenses. It was built in 1492 and its thick walls concealed a secret well, which was of vital importance during times of siege. It isn't open for touring.

This huge piece of artillery (pushka) has the largest caliber of any gun in the world, but like the Tsar Bell that has never been rung, it has never fired a single shot. Cast in bronze in 1586 by Andrei Chokhov, it weighs 40 tons and is 17½ feet long. Its present carriage was cast in 1835, purely for display purposes.