50 shades of blue - that way I would describe the Blue Cave (Modra špilja) in Croatia. It is one of the most amazing natural wonders in the Adriatic sea and Europe. Located at the island Biševo in Croatia, in the middle of the Dalmatian archipelago, five kilometers southwest of the Island of Vis. It is one of the favorite tourist destinations for the people keen in diving and active holidays. And it’s famous all over the world for its extraordinary magical blue aura!