The Arena is the only remaining Roman amphitheater to have four side towers and with all three Roman architectural orders entirely preserved. It is the sixth largest surviving Roman arena and a rare example, among the 200 Roman surviving amphitheatres, of unique technological solutions. It is also the best preserved ancient monument in Croatia.
Istria (Croatian, Slovene: Istra; Italian: Istria; Istriot: Eîstria), formerly Histria (Latin), is the largest peninsula in the Adriatic Sea. The peninsula is located at the head of the Adriatic between the Gulf of Trieste and the Bay of Kvarner. It is shared by three countries: Croatia, Slovenia and Italy.