Melissani Cave is one of Greece’s most famous natural wonders. It lies near Sami, about 10 kilometers from Argostoli. The cave features a stunning underground lake with crystal-clear blue waters.

The cave formed thousands of years ago due to geological processes. Part of its roof collapsed, creating an open chamber that allows sunlight to enter. When the sun is high, the light reflects off the water, creating a magical glow. The water appears in shades of deep blue and turquoise, changing with the angle of the light.

Visitors explore the cave by boat. Guided tours take small groups across the lake, offering close views of the rock formations. Stalactites hang from the cave’s ceiling, adding to the mystical atmosphere. The boat ride is peaceful, with the only sounds coming from the gentle paddling and occasional birdsong.

The lake contains both seawater and freshwater. Underground channels connect it to the Ionian Sea, creating a unique water mix. The water level changes with the tides, constantly renewing itself.

The surrounding area offers more natural beauty. Nearby, the lush greenery of Kefalonia’s forests provides a great setting for exploration. Many visitors combine their trip to Melissani with a visit to the nearby Drogarati Cave.

Access to Melissani Cave is easy by car or tour bus. A short tunnel leads visitors to the entrance, where boats await. The cave’s working hours are 9 AM to 6 PM during high season and it is recommended to visit the cave either early in the morning or a few hours before closing to avoid high tourist traffic.

Melissani Cave is a must-see destination for nature lovers. Its breathtaking colors, fascinating history, and peaceful boat ride make it one of Kefalonia’s most unforgettable attractions.