Leaning Tower of Pisa - Italy

The construction of this imposing mass was started in the year 1174 by Bonanno Pisano. When the tower had reached its third storey the works ceased because it had started sinking into the ground. The tower remained thus for 90 years. It was completed by Giovanni di Simone, Tommano Simone (son of Andreo Pisano), crowned the tower with the belfry at half of 14th century.The leaning Tower of Pisa is famous because it leans. Although it was designed to be perfectly vertical, it started to lean during construction. However, even without this famous characteristic, this building would still be one of the most remarkable architectural structures from medieval Europe. It stands at 60 metres and until 1990 was leaning at about a 10 degree angle.