The story of leading destination and boat day tours from the Split Riva waterfront is intertwined with the allure of the famous Middle-Dalmatian waterlogged sea cave, the Blue Cave, also known as the Blue Grotto. This natural wonder has become an iconic attraction, drawing travellers to experience its enchanting blue light and stunning interior. The Brilliant Blue Cave on the island of Bisevo is a natural wonder and a popular tourist destination in the Adriatic Sea.