Kalymnos Island has become one of the most popular rock climbing destinations in the world. The unique quality of our rock, the easy and fast access, and the tactful rings which lead you to the rock climbing sectors, the mild climate and the warm hospitality of our locals has made Kalymnos a favorite among climbers. Climbers or those wanting to learn, can find equipment, guidance or meet contacts at the climbing store located in the hotel. Kalymnos is also known to be the center of the Greek Sponge Diving Industry. The capital of Pothia has a number of workshops where sponges are cleaned, hand cut, and sold. The Nautical Museum also has a display on sponge diving.