Visit Passetto di Borgo and Castel Sant'Angelo, some of Rome's historic sites.
The Passetto di Borgo is an ancient passage that connects Vatican City to Castel Sant'Angelo. It was a vital escape route for popes during times of danger.
Castel Sant'Angelo began as Emperor Hadrian's mausoleum and later became a fortress, papal residence, and prison. Today, it houses intriguing artifacts and offers fantastic views of Rome.