Castel Sant'Angelo, Rome — Visitor Guide & Things to Do Nearby

Castel Sant'Angelo is a towering cylindrical fortress on the banks of the Tiber, just a short walk from St. Peter's Basilica. Originally built as a mausoleum, it has been a castle, a prison, a papal refuge, and a museum over nearly 2,000 years.

The building was commissioned by Emperor Hadrian in 123 AD as a tomb for himself and his family. Completed in 139 AD, after Hadrian's death, it was the tallest building in Rome for centuries. In 403 AD, it was converted into a military fortress, and by the medieval period it had become one of the most important defensive structures in Rome.

The name comes from a legend. In 590 AD, during a devastating plague, Pope Gregory I reportedly saw the Archangel Michael atop the building, sheathing his sword. The plague ended shortly after, and a statue of the angel was placed on the summit, where it still stands.

The castle also has a famous escape story. In 1539, the goldsmith and sculptor Benvenuto Cellini was imprisoned here but managed to escape by breaking through his cell with tools he had fashioned from tongs, lowering himself from the walls with knotted bedsheets. He broke his leg in the fall and was recaptured.

A secret elevated passageway, the Passetto di Borgo, connects the castle directly to the Vatican, allowing popes to flee to safety. It was used during the Sack of Rome in 1527.

If you're on a Questo quest through Rome, Castel Sant'Angelo is a landmark where every layer of history tells a different story.