Krka National Park is situated along the Krka River in southern Croatia. It's known for a series of 7 waterfalls. In the south, Skradinski Buk waterfall is flanked by traditional watermills. To the north, a nature trail passes another striking cascade, Roški Slap, and the Krka Monastery, built above ancient Roman catacombs. Visovac Island is home to the 15th-century Franciscan Monastery of Our Lady of Mercy.