Alberobello, Puglia, Italy. Alberobello is a small town and comune in the province of Bari, in Puglia, Italy. It has about 11,000 inhabitants and is famous for its unique trulli constructions. A Trullo is a traditional Apulian dry stone hut with a conical roof. Their style of construction is specific to the Itria Valley, in the Murge area of the Italian region of Apulia.