Alberobello - secret of trulls. Alberobello’s story is a legend of the most astonishing case of tax fraud. The town was built in such a way that it could be demolished overnight, leading to tax collectors. This event took place centuries ago, though it might as well have happened today. By the end of the 15th century, counts of Acquaviva d’Aragón began to settle their fiefs in Apulia, in Larubedd, which was later changed to Alberobello ("beautiful tree"). Fertile lands abounded in the limestone boulders from which the chiancarelle was obtained - the size of brick. In the seventeenth century Count Giangirolamo began systematic urbanization of the town, while ordering to build houses without mortar. In order to increase the stability of the roofs, they were given a conical shape. In 1644, after sending a jealous neighbor, the viceroy of Spain sent tax collectors. Upon arriving, they found only a debris swarm, for the town was demolished at night, and soon afterwards rebuilt. Trulli was an inseparable part of the landscape, and the way they were built spread throughout the valley. At present, they are owned by the Germans and English, as well as museums and monuments open to the public. The largest is the two-storey Trullo Sovrano, erected in the mid-seventeenth century, where music and cultural events take place.