The best-known of the trulli is the trullo sovrano (sovereign trullo) at Piazza Sacramento in Alberobello. The 15m (50-ft.) structure, the only true two-story trulli, was built during the 19th century as headquarters for a religious confraternity and carbonari sect. To find it, head down Corso Vittorio Emanuele until you get to a church, and then take a right. The trullo sovrano is open daily from 10am to 1pm and 3 to 7pm, charging no admission.

On the outskirts of Alberobello, you can also visit the small town of Castellana, home to a series of caverns that have been carved out over the centuries by water streaming through the rocky soil. A wide stairway leads you down through a tunnel into a cavern called the Grave. From here, a series of paths winds through other underground rooms filled with the strange shapes of stalagmites and stalactites. The culmination of the journey into the earth ends with the majestic Grotta Bianca, where alabaster concretions are the result of centuries of Mother Nature's work. You can visit the Grotte di Castellana only on guided tours, usually one per hour until early afternoon, at 13€ ($19); call tel. 080-4998211 for a schedule. Be sure to bring a sweater; the average underground temperature is 59°F (15°C), even on hot summer days.

Most visitors like to buy the hand-painted clay figurines that abound in every souvenir shop. You can also find a good assortment of fabrics and rugs at reasonable prices. One of the most evocative souvenirs would be a miniature re-creation of the region's legendary trulli. Crafted in the same type of stone that was used by the ancient builders, they're small-scale duplicates of the originals, ranging in size from a simple rendering to a replica of an entire village.

Note: This information was accurate when it was published, but can change without notice. Please be sure to confirm all rates and details directly with the companies in question before planning your trip.