We go to the northern part of Italy: Piedmont, and here, in the southern part of the region, called le Langhe, what's worthy of being a World Heritage Site is about the land itself and what it produces, rather than about art and architecture.

This segment is about how the famous wine Barolo came into being. It all started in the Grinzane Castle in the mid-1800s.

The Grinzane Castle houses a Museum of Peasant Civilization. Alberto Angela shows us a huge wine press and explains how it worked.

We discover an amazing spot in the Italian Alps that overlooks the Chisone valley: an eighteenth-century fortified boundary wall, one of the longest in the world.

Alberto Angela takes us to some of the most beautiful mountains in the world, the Dolomites. How did they become so popular? It's a fascinating story.

Alberto Angela takes us to the place where the best wood for making stringed instruments can be found: the Paneveggio Forest.

Alberto Angela explains how these wooden boards of red spruce become important parts of stringed instruments. The Dolomites are also a very unique place in terms of the land itself and how it is managed by the people who live there.

We finally learn where the name "Dolomites" comes from. We also learn the fascinating story of how these mountains came to be.

Alberto Angela gives us a simplified but fascinating description of how the Alps, and the Dolomites in particular, were formed from the sea. He goes on to tell a completely different story involving the Dolomites.

There is a legend about the Dolomites, which has to do with a famous rose garden.

We say goodbye to the Dolomites and, after enjoying the extraordinary panorama from those peaks, go on to Venice, one of the most marvelous cities in the world.

Amazing aerial views of Venice and the Venetian Lagoon provide an introduction to this episode on the Veneto Region. Andrea Palladio, one of the world's greatest architects, was from Vicenza and some of his most famous villas are highlighted in this segment.

The city of Vicenza and its surroundings enjoyed an architectural golden age in the middle of the 16th century with, as its shining star, architect Andrea Palladio. Alberto Angela tells us the story of how it all came about.

We visit the interior of Villa Coldogno and see to what extent Andrea Palladio was ahead of his time as an architect, and how he was able to combine functionality and elegance.

This episode of Wonders concludes, as we await more treasures to discover.