An important paleo-venetian resort, in 42 B.C. it became a Roman military colony named Julia Concordia. The ancient Roman city can be rediscovered through the archaeological route in the city centre, where parts of the walls and traces of the great urban buildings are still preserved: the forum, the theatre, the baths and part of a bridge with three arches where the Via Annia passed.

Concordia Sagittaria offers a truly extraordinary window on history and art: the sepulchral enclosures, the Basilica enriched with mosaics, the Baptistery with interiors beautifully decorated with frescoes and the Archaeological Civic Museum where Roman and early Christian finds are exhibited.