Climbing
The island of Rab is covered with many hiking trails, most attractive of which climbs all the way to the highest peak, Kamenjak, allowing you to enjoy an unparalled view of the surrounding islands and mountains. With two national parks (Paklenica and Velebit) in close proximity it would be a real pity not to put on your walking shoes and go back to nature for a bit. Just don't forget to take a guide with you, just to be on the safe side and be able to discover the most interesting sites.