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Within the next ten years, the first three floors were added, but war once again got in the way of the building of this beautiful tower. Over 100 years late, designer Giovanni di Simone began construction once again, adding three more layers to this leaning layer cake, and by 1284, the tower was considered finished at long last. Simone attempted to correct the leaning problem by building one side of the wall higher than the other, and for this reason, the building is, in fact, curved.