Only 20 km from Tribunj is located the island of Murter , from where you can go for all-day boat trip to the Kornati archipelago, to the largest island group of the Mediterranean Sea with many little islands and islets. The islands are characterized by their high rocky cliffs, which are called "crown". The National Park includes 89 of total 140 uninhabited islands, islets and reefs. It is a fascinating labyrinth of sea and islands with high cliffs and extraordinary relief. The National Park covers an area up to 223 km ², of which only about a quarter mainland. The largest island called Kornat covers 33 km ². The other islands included in the national park are smaller and more impressive . On the islands are preserved medieval monuments and the remains of Romans who lived here despite the lack of drinking water. Kornati are also popular for sailors, who can use some of the 9 marinas. The Administration of the National Park is located in the town of Murter.