The mausoleum featured a massive circular drum, built on a square base, which was characteristic of Roman imperial tombs. This monumental form symbolized eternity and power, making it a fitting final resting place for an emperor.
The structure now known as Castel Sant’Angelo was originally built as the Mausoleum of Hadrian, intended as a grand tomb for the Roman Emperor Hadrian and his family. This massive cylindrical monument, constructed between AD 135 and 139, was designed to reflect the emperor’s power and legacy. Its original function as a mausoleum is what gave it its initial identity, but over the centuries, the building's purpose transformed dramatically.
From an imperial tomb, it evolved into a military fortress, a refuge for popes, and even a prison. Today, as Castel Sant’Angelo, it stands not only as a museum but also as a powerful symbol of Rome’s layered history—its name and architecture still echoing its ancient beginnings.
The original funerary urns of emperor Hadrian, his wife, and other Roman emperors are lost. Over the centuries, especially during the Visigothic sack of Rome in AD 410 and later as the structure was converted into a military fortress, the tomb was looted and desecrated. Most of the ashes and urns were either destroyed or scattered, and none are known to have survived in their original place.
Today, no one is buried at Castel Sant’Angelo, but visitors can still explore the Hall of Urns, a solemn and evocative space that once housed the imperial ashes. Though the urns themselves are gone, the hall serves as a powerful reminder of the building’s original role as a mausoleum and offers a rare glimpse into the grandeur of ancient Roman funerary traditions
The Mausoleum of Hadrian went through several reformations over the years. It was coined the name ‘Castel Sant’Angelo’ after several changes and renovations by the succeeding emperors.
The ashes of emperor of Hadrian, his wife Sabina and his first adopted son, Lucius Aelius, as well as several successors until Caracalla were buried in the Mausoleum of Hadrian until they were plundered and destroyed.
In 590 AD, during a devastating plague, Pope Gregory I reportedly saw a vision of Archangel Michael atop the mausoleum, sheathing his sword as a sign of the plague's end. Following this, a statue of the angel was erected, and the mausoleum was renamed Castel Sant'Angelo.
Yes, visitors can explore the structure, now known as Castel Sant'Angelo, which retains much of its original architecture, including the central tomb chamber believed to be Hadrian's burial site.
Inside, you'll find the Papal Apartments, the Treasury Room, ancient Roman artifacts, Renaissance frescoes, and the original burial chamber. The spiral ramp leading to the upper levels offers insight into Roman architectural ingenuity.
While efforts have been made to improve accessibility, some areas may still pose challenges due to the historic structure. Elevators are available to certain levels, and accessible restrooms are located on Level 0.
Non-flash photography is permitted for personal use. Tripods and professional equipment may require special permission.
Included with Castel St. Angelo tickets
Timings
RECOMMENDED DURATION
2 hours