Sibenik lies in the middle of the Croatian Adriatic Coast, at the mouth of the Krka River, one of the most beautiful karst rivers in Croatia. Limestone mountain crests, small valleys and striking plateaus characterize this scenic region. A picturesque town, Sibenik was originally built on a small island, surrounded by a high wall and towers. The historic old town of Sibenik is rich in cultural and historical monuments. The most representative among them is the famous Cathedral of Sibenik, an important architectural Renaissance building listed as a UNESCO World Heritage Site. Today, Sibenik is the administrative, political, economic, social and cultural center of a county, which stretches 62 miles along the Croatian Riviera between the Zadar and Split.