Story : A journey to the edge of the imagination, 600 km off the coast of Chile, in the Juan Fernandez archipelago. This is Robinson Island (that of the hero of Daniel Defoe's novel, in turn freely inspired by the real adventure of Alexander Selkirik). The gigantism and the profusion of wild and original flora make this place one of the greatest examples of endemic botanical phenomenon on the planet and a model of nature conservation. Alberto Angela and Michelangelo Pepe, on the trail of Saint Exupery, the author of one of the most read books in the world, The Little Prince. Was he really shot down by a German pilot while flying from Corsica to France? Lorenzo Pinna, assisted by Caterina Borelli, will take us to the tunnel, located on the seabed under the Bosphorus, which will connect European Istanbul to Asian Istanbul with a subway. During the works, the remains of 32 ships from 1000 AD were found.