Quite an interesting phenomenon had to be observed on a trip to Egypt. Private houses with unfinished upper floors are everywhere. It turned out that this oddity has a completely logical explanation.
According to Egyptian law, the tax on a residential building is paid only when it is completed. Therefore, the Egyptians, as a rule, do not finish building their houses. There is also a tradition of building the beginning of the next floor for children. When they grow up, they finish building their floor and lay the beginning of the next. As a result, such eternally unfinished pyramids with family clans living in them grow up.