Callatis Citadel (Mangalia)

While Histria sits in open countryside and Tomis lies under a working modern city, Callatis offers something different: substantial Greek and Roman ruins integrated into the contemporary town of Mangalia, sometimes literally beside hotels and apartments. The colony was founded around 540 BC and remained important for over a thousand years through the Greek, Roman, and Byzantine periods. Visible today: a 4th-century BC defensive wall (along the Mangalia coastline), a paleochristian basilica with mosaic floors, several tomb chambers, and the seafront archaeological park. The most extraordinary find — a Hellenistic tomb containing a sealed papyrus scroll, exceptionally rare for the Greek world — is now in the on-site Callatis Archaeology Museum together with sarcophagi, ceramics, statuary, and a chronological exhibition. Mangalia itself is a working seaside town with hot springs, a beach, a small port, and the older but quieter atmosphere of a permanent local community.