The Kutafya Tower

Initially, the tower was surrounded by a moat and was the only access to the city through its lift bridge. The tower had two combat tiers, the upper landing equipped with arrowslits and machicolations, which made it a formidable obstacle to the besieging of the fortress.

Marking today the main public entrance to the Kremlin, the Kutafya tower was modified several times through the centuries:

The Kutafya Tower is currently 13.5 m high; it used to be 18 m when the lower part of the tower was not covered.

Source: Wikipedia

1375940_891308947568941_2318237111172307634_n1517558_891308970902272_385491020858856394_n10846307_891308944235608_6341232131610918860_n10406989_891308960902273_1612597147978750370_n