What is chromotherapy? Marino, who is a chromotherapist, explains this fascinating branch of alternative medicine.

Alberto Angela, well-known presenter of historical TV documentaries, takes us on a journey to discover some of the "wonders" — both man-made and natural — of this "treasure peninsula" called Italy. The journey begins at the Royal Palace in Caserta.

It's hard to fathom the scale of this royal palace. We learn how many workers it took and how long it took to build. The grand staircase is of amazing dimensions, and, when seen from the top, our host seems like a small dot at the bottom of it.

We visit the magnificent, immense Throne Room, with its small but elegant throne, and vaulted, frescoed ceiling.

Alberto Angela takes us from the public throne room to the private chambers of the Royal Palace. In order to obtain the desired wall coverings, a whole complex was built for manufacturing silk. It's still operating today. Incredibile!

The narrator makes us aware of the vast number of people necessary to run the Palace. We visit the most intimate place in the Palace: the queen's dressing room and bathroom. It is fascinating to learn all the ways in which it was outfitted to both pamper and protect the queen.

If we thought the interior of the Royal Palace of Caserta was amazing, we should get ready for even more amazement as we go outside and see the spectacular park — a true capolavoro (masterpiece) — which Luigi Vanvitelli, architect and engineer, designed, giving water the starring role.

Exploring the gardens further, we come upon a grotto, as well as what looks like an ancient Roman site, replete with original statues. It was all part of Vanvitelli's plan.

We leave the Royal Palace of Caserta and head towards Cilento in Campania where there is a huge Benedictine monastery. When we see the term convento, we might assume it is a convent for nuns, but in Italian, un convento can be a religious community for either monks or nuns (or both).

Alberto Angela us takes back in time, to a city that came about in a totally different way: splendid Matera in Basilicata. It's definitely worth a trip.

Matera is all about caves and grottoes. There were many natural caves that were expanded to be used as dwellings and churches, and other man-made grottoes as well.

We enter a fascinating church carved right into the rock: the Church of the Madonna di Idris. There are some surprising discoveries awaiting us.

We see the inside of house built into the rock. It is fascinating to learn how families coped with the problems of water, humidity, and cramped quarters.

Living conditions were so different at the time of the cave dwellings. Imagine having a mule and rabbits running around the house! The government eventually put a stop to this type of dwelling, and much was gained, but much was lost. On the other hand, people had to live somewhere. The Civita, the oldest part of Matera, filled up quickly around the imposing cathedral, and there was no more room for building houses.

In Matera, various epochs shake hands, as Alberto Angela put it. Matera continues to amaze us with what's hidden underneath the piazza of the Baroque quarter: Il Piano.