A journey to the centre of the earth, through underground caves and tunnels and between the "trulli" huts. Visiting the Castellana Caves and Alberobello, in the Itria Valley, is a chance to really plunge into the history and traditions of Apulia, where breathtakingly beautiful sights await around every corner. Accompanied by an expert guide, venture into the Castellana Caves to discover the intricate network of underground karst caverns, plunging down to 122 metres. Marvel at every step as you explore three kilometres of underground canyons, fossils, stalactites and stalagmites. Next, head to Alberobello, in the heart of the Murge plateau, famous for its "trulli", the white conical-roofed huts surrounded by verdant and unspoilt nature. Stroll through Rione Monti, the town's oldest neighbourhood, as well as Aia Piccola. Discover the Church of Saint Anthony, the only one designed in the shape of a "trullo", and visit a real "trullo", where you can sample some delicious local products: cherry jam and zero-mile preserves; prickly pears and figs with Apulian bread; and three traditional rosolio liqueurs, made from spirits and flowers and fruit picked in the countryside. You can taste the traditions and culture of the land in every bite.