There are eight national parks in Croatia. Several, including Plitvicka and Krka, are situated in karst areas where the landscape is largely shaped by the action of water dissolving carbonate bedrock over the millennia resulting in unusually beautiful and fascinating features such as waterfalls, lakes, caves, and springs. Plitvicka is Croatia’s largest and first national park, established in 1949. Here sixteen lakes are renowned for their distinctive colors, ranging through azure, blue, green and grey, their colours changing constantly depending on the quantity of minerals in the water. Other parks, such as Mljet and Kornati, protect beguiling island and seascapes.