Castel Sant'Angelo

Palace · Borgo / PonteRome,Italy

Hadrian's cylindrical tomb on the Tiber, later a fortress, prison and papal refuge, still linked to the Vatican by a walled corridor across the rooftops.

Castel Sant'Angelo is a drum of brick and travertine on the Tiber's right bank, and the climb takes you through every one of its lives in one go. A spiral ramp built for Hadrian's funeral winds up past prison cells and frescoed papal rooms to a terrace where the city spreads out and the dome of St Peter's stands directly ahead above the rooftops. A bronze angel crowns the top. This rampart is where Puccini's heroine Tosca throws herself to her death. Below, angels modelled on Bernini's designs line the footbridge across the river. Hadrian raised it around 139 AD as a mausoleum for himself and his heirs. When the empire faded, its sheer mass made it a fortress, and popes claimed it, walling it into the Vatican's defences and threading an elevated corridor, the Passetto, from their palace to its keep. In 590, as plague gripped Rome, Pope Gregory reportedly saw the Archangel Michael sheathing his sword above the tomb, and the castle took his name. From the ramparts you can still trace the Passetto running arrow-straight across the Borgo rooftops toward St Peter's.

Worth knowing

Good to know

The best view of St. Peter's is from here, not the Vatican — climb to the top terrace at the angel's feet, where the dome rises clear over the rooftops.
Read the building bottom to top as time — the round Roman drum at the base, medieval brick above it, Renaissance papal apartments higher still, a Baroque angel on top; you climb through sixteen centuries in one loop.
The star shape only reads from across the river — the pointed bastions added for defence make sense from the far bank or the bridge, never from inside the walls.

Things to do

1
Walk up Hadrian's ramp
Enter at the base and take the long curving ramp slowly, on foot, instead of rushing for the terrace. This is the building's original path to its core. Let the gentle, unbroken spiral pull you inward and up, feel the grade underfoot, and notice how little daylight reaches this deep inside the drum.
2
Time the terrace for the last hour of light
Climb to the highest terrace, at the feet of the bronze angel, in the last hour before sunset. Face west toward St Peter's and watch the great dome and the Tiber catch the light. From here you can also pick out the Passetto, the low brick wall running arrow-straight across the Borgo rooftops, and trace it all the way to the basilica. Then turn slowly and take in the full circle of Roman rooftops below you.
3
Cross the bridge for the angels
Walk out onto Ponte Sant'Angelo on foot and move slowly between the stone angels lining the parapet, each holding an instrument of the Passion. Stop at the middle of the bridge and look back: the castle's round bulk and its crowning angel line up cleanly over the water.