The so-called Arch of Saint Lazarus is part of a ruined arcuated structure located in Rome along Via Marmorata. Since this is the general vicinity of the ancient Emporium, these remains may belong to an ancient horreum. Medieval folklore associated the building with Horatius Cocles.
Description via Pleiades. Coordinates and heritage data from the Atika atlas.
Atika pings you when you walk or drive past heritage like this. Works offline, no account needed to explore.