7Kastellorizo Blue Cave – Kastellorizo

Also known as the Blue Grotto, this spectacular sea cave on Kastellorizo Island is one of the most visually stunning in Greece.

Its entrance is so small that boats can only enter when the sea is calm, but once inside, visitors are treated to an awe-inspiring blue glow created by sunlight reflecting off the water. The cave’s size, combined with its striking colors, makes it a must-visit for anyone exploring the Dodecanese Islands.