For a captivating history lesson, check out the crumbling remnants of Roman Trieste and try to imagine how it must have looked in its prime.
Located in Roiano-Gretta-Barcola-Cologna-Scorcola, this once-important structure is worth a visit. But you'll find plenty more to discover in this area. Piazza Unita d'Italia, Miramare Castle, and Canal Grande di Trieste are within close reach of Roman Trieste.