In Roman antiquity, a marketplace for perishable foods consisting of shops around a colonnaded court; the center building was either round or octagonal. Some more sophisticated examples have individual architectural features associated with them, such as (at Leptis Magna and Pompeii) a porticoed enclosed rectangular courtyard, with one or two colonnaded pavilions in the central area. At Pompeii, shops under the portico face inward into the market and also outward into the surrounding streets. At Rome, the Macellum Magnum erected by Nero was apparently a grand-scale example, doubling both the portico and the pavilion into two-storied structures.