Italy's Sforza Castle includes a underground passage that linked the Duke of Milan to his wife’s tomb.

Secret Italy around Viterbo: Etruscan ruins, castles and lakes The region around Viterbo, located north of Rome, remains little known among tourists but hides many treasures. Here you can find ...

Since then, Petra’s fame has grown. UNESCO inscribed the city’s ruins as a World Heritage site in 1985, and the 1989 film Indiana Jones and the Last Crusade used Petra as a stage for some scenes.