Istria is Croatia's (and the Adriatic) largest peninsulaIt located on the north part of the Adriatic Sea on the territory of Slovenia, Croatia and Italy. Geographic boundaries of Istria goes from the Bay Muggia to the bay Preluka (by example: Part of Istria, Opatija, The western coast of Istria is shallow water, and more divorced, while the eastern is steep and less populated. Istria is usually divided into three parts: the Red Istria (west coast), where the we can find red-brown earth (crljenica), Gray Istria (central Istria), the gray soil and White Istria (Učka slopes and the eastern part of the peninsula) because of the rocky soil the eastern coast of Istria (the so-called Liburnija or cities Brsec, Lovran, Opatija, Volosko, Kastav) and the western part of the Kvarner Bay of the 1993 administrative year is separate from the rest of Istria in the Republic of Croatia, so that today Istria is divided between two counties: Istria and Primorsko-Goranska county. Large part of Istria covers Istria County Important cities and municipalities of Istria include Pula, Pazin, Porec, Rovinj, Opatija, Umag, Novigrad, Labin, Buzet, Motovun, Koper and Piran.