Alberobello is known as the Capital of the Trulli. The trullo is a fascinating architectural feature of this area of Puglia, a building with conical roof made without mortar. Alberobello has special status internationally - designated a UNESCO world heritage site - because its collection of some 1,500 trulli in an urban environment is unique. Some of the trulli are now used for stores, restaurants, and lodging. But many are still inhabited by locals, who are very friendly to visitors. http://whc.unesco.org/pg.cfm?cid=31&id_site=787