The Blue Cave, or Modra Špilja, is a mesmerizing sea cave located on the island of Biševo, Croatia. Famous for its stunning blue light, the cave’s luminous glow is caused by sunlight reflecting off the cave floor, creating an ethereal, radiant effect. Visitors can reach the cave by boat and witness the magical spectacle firsthand. Its surreal, otherworldly beauty makes it a popular spot for tourists, especially those seeking a unique, unforgettable underwater adventure amidst the stunning Adriatic Sea.
24. Teufelshöhle Pottenstein – Germany
