The oddest-looking buildings in Italy are the arcane "trulli", unique circular dry-stone buildings typical of the region of Puglia, the ancient Apulia. There is nothing like them anywhere in the world. They dot the valley of the Itria river in the Murgia area.
These constructions are commonly called "trulli di Alberobello", but they can also be found in other Apulian locations: Locorotondo, Fasano, Ostuni, Martina Franca, and others. But the largest number of these conical marvels is concentrated in Alberobello, a small town that looks like a fairy tale place. Alberobello was built on top of a hill surrounded by almond groves and olive trees, and its name means "beautiful tree."
Fonte: L'italo-Americano