The tiny island of Košljun contains a 16th-century Franciscan monastery built on the site of a 12th-century Benedictine abbey. Taxi boats wait on the Punat harbourside, ready to shuttle people across to the island (20KN return); in summer there’ll be plenty of interested parties with whom you can share a ride.
Highlights include a large, appropriately chilling Last Judgment , painted in 1653 and housed in the monastery church. There's also a small museum with religious paintings, an ethnographic collection and a rare copy of Ptolemy’s Atlas printed in Venice in the late 16th century. Allow extra time to stroll around the forested island and admire its 400 plant species.