What caused problems during the construction of the Leaning Tower of Pisa?
Giải thích
2. soft, sandy and unstable soilThe original height of the tower was 60 meters, but as it is leaning, the lowest side is now less than 56 meters.
2. soft, sandy and unstable soilThe original height of the tower was 60 meters, but as it is leaning, the lowest side is now less than 56 meters.