30. Buildings On Buildings
That sounds like something out of a Dr. Suess book, but it is a sad reality in China. A heavily mentioned problem in this list is that the country is going through land scarcity crises. Development is expensive and now there’s hardly any space left for construction.
This gave rise to the novel idea of building homes on already developed apartments. This stacking of buildings has its obvious cons, one being the addition of excess weight to the same foundation that may not be able to bear it. Nonetheless, the practice continues, although, illegal houses are usually torn down.