Istra (
english Istria) 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. By far the largest portion (89%) lies in
Croatia. Important towns in Istria County include Pula, Poreč, Rovinj, Pazin, Labin, Umag, Motovun, Buzet, and Buje. Smaller towns in Istria County include Višnjan, Roč, and Hum.