366?, History
41: Why Doesn’t The Leaning Tower Of Pisa Fall Over?
Whether they’re small houses or tall skyscrapers, the buildings we live in have nice straight walls to hold up our ceilings. The Leaning Tower Of Pisa took 199 years to build, starting in 1173, but stood straight for only the first 5 years. As soon as they added the 3rd story, it started tilting. The […]