Basilica dei Santi Quattro Coronati, Rome

This is the Basilica dei Santi Quattro Coronati, a church within a fortified Augustinian convent complex on the Caelian Hill. The basilica’s origins reach back to the fourth or fifth century, making this a place where Christian worship has continued across a very long stretch of Rome’s history. Its title means the Four Holy Crowned Martyrs: their personal names were not preserved, so their number became their identity.

As local tradition has it, they were soldiers who refused to honour Aesculapius and were killed under Diocletian; another tradition connects the title with stoneworkers punished for rejecting pagan images. The complex you see includes courtyards, a former cardinal’s stronghold, a monastery cloister, and the Chapel of Saint Sylvester. After Robert Guiscard’s troops destroyed the earlier church in 1084, Pope Paschal II rebuilt a smaller basilica, completed in 1116.

The Chapel of Saint Sylvester preserves medieval frescoes presenting episodes from the lives of Pope Silvester and Emperor Constantine, including Constantine’s legendary baptism and the forged Donation of Constantine. Look for the complex’s restrained exterior: its massive walls conceal an unusually rich history. In the monastery, frescoes rediscovered in 2002 show the months, the liberal arts, the seasons, and the zodiac, with King Solomon suggesting that the room served as a hall of justice.