August 9, 1173 Leaning Tower of Pisa

In the world of architecture, a campanile [kampəˈnēlē] is a tower, usually built beside or appended to a larger structure and most often associated with Italian architecture. Since the 19th century, such structures have served as clock or bell towers for factories, colleges and apartments. Earlier examples are mostly associated, with churches.

The earliest Campaniles date to the 5th and 6th centuries, such as those in Classe (c. 532–49) and Ravenna (c. 490). The most famous is the leaning tower of Pisa, construction for which began on this day, in 1173.

Standing 55.86 metres (183.27 feet) on the low side and 56.67 metres (185.93 feet) on the high side and weighing in at 16,000 tons, early planning began on January 5, 1172 when the widowDonna Berta di Bernardo bequeathed 60 Soldi for the purchase of stones, to form the foundation.

Footings were laid on August 9 of the following year…