In the small town of Alberobello, Bari province southern region of Apulia in Italy there are some wonderful examples of traditional structures built without mortar. Such houses are called trulli. These dry stone huts built of limestone slabs stacked on top of each other, forming a pyramidal, domed or conical roofs. Despite the lack of a solution at home surprisingly durable and reliable.
Trulli were built in that period of history, when the construction of permanent houses, highly taxed.
Resourceful people of this region proposed the idea of building Trulli - temporary homes, which can be removed as soon as possible: especially if suddenly there was a tax inspector.
It is known that this happened in 1644, to inflate the tax inspectors sent by the King of Naples.