Highlights: The Fort Sant'Angelo was originally a family cemetery built by Emperor Hadrian. It was later converted into a papal fortress in the 6th century AD. It is said that in 590 AD, Pope Gregory saw an angel in the sky above the fort and named it the Holy Angel. Fort. Castel Sant'Angelo, located on the Tiber River, at the western end of the ancient Roman region, there are several bridges leading to the west bank of the Tiber River, the more important one is the bridge to the Castel Sant'Angelo (PonteSantaAngelo). When walking through the Pont Sant'Angelo, you may wish to take a closer look at the shape of the bridge and the various exquisite carvings on it. The bridge designed by Bernini can be said to be a masterpiece of Baroque decorative art, but only two of the angel statues on the bridge are made of The statue, sculpted by Bernini himself, has been moved to the church of Santa Adreadelle Fratte for proper preservation, and two replicas have been placed on the bridge. The history of Castel Sant'Angelo in the 2nd century AD, the Roman emperor Hadrian designed the Castel Sant'Angelo and personally directed its construction as the resting place for himself and his successors. Over the centuries, Castel Sant'Angelo has undergone a number of changes: first as a fortress to stop the Visigoths and Ostrogoths from invading, then as a prison, and later converted into a splendid papal palace. Now as a museum, in addition to the collection of stuccoes, frescoes and the residence furniture of the Pope, ancient weapons are also an important and precious collection here.