Only 750 meters from Punat lies the islet of Košljun. It is known for the Franciscan monastery where the monks have collected and preserved numerous valuable items for centuries. The islet has a museum with an ethnographic collection containing numerous items produced by Krk fishermen and farmers, as well as folk costumes from across the Island of Krk. The monastery also owns a rich zoological collection consisting of a large seashell collection and unique animal specimens, such as the one-eyed lamb. The monastery also has a rich library with around 30,000 titles. It includes the Ptolemy’s atlas printed in Venice in 1511 (one of the three preserved copies). The monastery is a zero category monument. There are two churches on the islet – the Church of Blessed Virgin Mary’s Annunciation and the Church of St. Bernard.
It takes around two hours to see the whole islet, but there are no catering facilities there.