“There is no evil without good, ” says folk wisdom. And she, this wisdom, as you know, is not mistaken. This is what happened in the ancient Italian city of Pisa, where, thanks to the problems that arose during construction, the result became not only world famous, but also an excellent business project. In short, the Pisans wanted to build the city's Cathedral of Santa Maria Assunta. But not just a cathedral, but a whole complex, which would include, among other things, a bell tower of gigantic, at that time, size.→