The third Augustan administrative region of the city of Rome was centered on the Oppian Hill and derived its name from the Isis et Serapis on the Via Praenestina. In addition to the named monuments, the region included 12 streets, 12 shrines, 2,757 blocks of flats, 60/160 houses, 17 horrea, 80 bathhouses, 65 cisterns, and 16 bakeries or mills. The region had 48 magistrates and two curators. The perimeter of the region was 12,350 Roman feet.
Description via Pleiades. Coordinates and heritage data from the Atika atlas.
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