On day three, take a day trip to the nearby towns of Alberobello and Ostuni. Alberobello is famous for its unique trulli houses, traditional dry stone huts with conical roofs. Explore the Trulli of Alberobello, a UNESCO World Heritage site, and learn about the history and architecture of these fascinating buildings. Afterward, head to Ostuni, known as the 'White City' due to its whitewashed buildings. Explore the charming streets, visit the Cathedral of Ostuni, and enjoy panoramic views from the city walls.