Istria is the largest peninsula within the Adriatic Sea. The peninsula is located at the head of the Adriatic between the Gulf of Trieste and the Kvarner Gulf. It is shared by three countries: Croatia, Slovenia, and Italy. Croatia encapsulates most of the Istrian peninsula with its Istria County.
The geographical features of Istria include the Učka mountain range, which is the highest portion of the Ćićarija mountain range; the rivers Dragonja, Mirna, Pazinčica, and Raša; and the Lim bay and valley. Istria lies in three countries: Croatia, Slovenia and Italy. By far the largest portion (89%) lies in Croatia. "Croatian Istria" is divided into two counties, the larger being Istria County in western 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.

Pula

Pula is the biggest city in Istria County. It has a population of about 62,000 people as of the year 2006. It has a long tradition of winemaking, fishing, shipbuilding, and tourism. Its most famous attraction is the well-preserved Roman ampitheatre. Pula is also an administrative center of Istria since Roman times.

Poreč

Poreč is a town and municipality on the western coast of the Istrian peninsula, in Istria County, Croatia. Its major landmark is the 6th-century Euphrasian Basilica, which was designated a UNESCO World Heritage Site in 1997.
The town is almost 2,000 years old, and is set around a harbour protected from the sea by the small island of Sveti Nikola (Saint Nicholas). Its population of approximately 12,000 resides mostly on the outskirts, while the wider Poreč area has a population of approximately 17,000 inhabitants. Ever since the 1970s, the coast of Poreč and neighboring Rovinj has been the most visited tourist destination in Croatia.

Rovinj

Rovinj is a city in Istria situated on the north Adriatic Sea with a population of around 14,000 people. Located on the western coast of the Istrian peninsula, it is a popular tourist resort and an active fishing port. Istriot, a Roman language once widely spoken in this part of Istria, is still spoken by some of the residents. The town is officially bilingual, Italian and Croatian.

Umag

Umag is a coastal town in Istria. The town hosts an annual ATP tennis tournament on clay courts.
Umag has a population of around 7,000 people, with a total municipal population of 13,000.

Rovinj

Amphitheatre in Pula

Poreč

Umag