Trullo buildings in Alberobello, Apulia, Italy

A 'trulli' remarkable town. Trullo buildings in Alberobello, Apulia, Italy

If fairy tales had architects, they might've come up with something like Alberobello in Italy. But instead of magic wands, it was limestone, mortar-free masonry and—according to some theories—a bit of tax evasion that built this town's signature homes: the trulli. These are whitewashed stone houses topped with dry-stacked limestone roofs shaped like upside-down ice cream cones. It's an ancient building technique, and in this case, a clever one. Back in the 14th century, locals were reportedly trying to avoid property taxes by constructing homes that could be quickly dismantled when the king's tax collector came around.

Alberobello's trulli aren't hidden one-offs. Entire districts—like Rione Monti and Aia Piccola—are packed with these quirky structures. Some are still lived in, while others have been transformed into cafés, souvenir shops and pint-sized museums. You'll even find a church built in trullo style. In 1996, UNESCO gave the trulli of Alberobello the heritage stamp of approval. It's not every day that a loophole becomes a landmark.