Forma urbis

Forma urbis,
a plan showing the city of Rome after AD 203 at a scale of roughly 1 : 240, engraved on 151 slabs of marble decorating a wall of the temple of Peace, perhaps in the office of the praefectus urbi (urban prefect). About 10 per cent of the total remains, some fragments being known only from Renaissance drawings. A few pieces appear to belong to an earlier version presumably from the Flavian complex.

Janet DeLaine