A trullo (plural, trulli) 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 . Trulli generally were constructed as temporary field shelters and storehouses or, as permanent dwellings by small proprietors or agricultural labourers. In the town of Alberobello , in the province of Bari, whole districts contain dense concentrations of trulli. The golden age of trulli was the nineteenth century, especially its final decades, which were marked by the development of wine growing.