A 2.5km walk heading north along the seaside promenade from Rab's Old Town will bring you to this peaceful Franciscan Monastery, dating from the 13th century. The monks have a small museum here with old manuscripts and religious paintings. Check out the pleasant cloister and, inside the baroque church of St Bernardine, the ethereal painted ceiling – a stark contrast to the visceral agony depicted on the late-Gothic wooden crucifix in the side chapel. Note also the 15th-century polyptych by the Vivarini brothers.
This crumbling old seafront fortress guarded the old town from pirate attacks. It's free to wander around inside and check out the inscribed Liburnian and Roman stones displayed within. There’s a 12th-century tower that was once used as a Frankopan courtroom and another round defence tower built by Venetians (if you fancy checking out the views from the top, there's a 10KN admission charge). The castle is now an open-air venue used for summer concerts and plays.