Macellum of Pozzuoli

The Macellum of Pozzuoli is a Roman marketplace from the late Flavian period (2nd century AD) in the ancient colony of Puteoli, southern Italy. Originally misidentified as a Temple of Serapis after a statue of the Egyptian deity was found during 18th-century excavations, it features a quadrangular courtyard surrounded by an arcade of 34 grey granite columns and a central tholos. The site is of major geological significance: bands of marine mollusc borings on three standing marble columns proved that the ground had sunk below sea level and re-emerged, providing key evidence of bradyseism in the Phlegraean Fields.