In this second episode we will find Alberto Angela in a magical and unusual place: we are among the domes of San Marco, on the roof of the Basilica of Venice. From there we will set off to discover the lagoon city. We will move along the lesser-known routes of the Doge's Palace and delve into the darkest aspects of the history of Venice. In the Piombi prison we will meet Giacomo Casanova, played by Fabio Troiano, while Ottavia Piccolo will tell us about her experiences as a Venetian by choice. We will then move to Campania, to Paestum, a piece of Magna Graecia in Southern Italy, where it seems that mythical gods and heroes still roam among the great temples of Hera, Athena, and Neptune.