"The tomb of the Roman emperor Hadrian"

Castel Sant'Angelo | Rome | Italy | 2006-11

The Mausoleum of Hadrian, usually known as the Castel Sant'Angelo, is a towering cylindrical building in Rome. The building was later used by the popes as a fortress and castle, and is now a museum. Legend holds that the Archangel Michael appeared atop the mausoleum, sheathing his sword as a sign of the end of the plague of 590, thus lending the castle its present name.