Daily Archives: December 10, 2020

The Tower of Pisa is one of the most famous buildings in the world.  The construction began in 1173 between the Arno and Serchio rivers in Tuscany, central Italy.  By the time the builders finished the third of eight planned stories approximately five years later, the tower’s foundation had begun to settle into the ground beneath, a dense mixture of clay, sand, and shells.  As a result of the soft ground of the foundation, the structure began to visibly tilt…..

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