The Maidens’s Tower is one of Azerbaijan’s most famous historical monuments and the symbol of its capital city, Baku. Built in the 6th century, it is 29.5 m high, 16.5 m wide and has 8 floors. The tower used to be right on the Caspian Sea and there was an underground tunnel connecting it to the old castle of Shirvanshah. It was built as a fortified tower offering protection against foreign invaders. Numerous attempts to take the tower failed and that is why it is known as the Maiden’s Tower. The breakwater extending from its southern wall was built to reduce the power of the impact of the waves when the tower was still at the seashore. Within its walls there is a 21-metre deep well.