6) Corfu, Greece
It may be a highly fashionable tourist destination; but Corfu nonetheless remains one of the best places in the world to find clear waters. Known as Kérkyra, the island is verdant and lush due to the extensive yearly rainfall. Corfu is also known to have some of the best beaches in the Mediterranean, although certain locations are likely to be overrun with tourists. You might want to venture to the eastern side of the island facing Albania, where you will find pebbled coves; or try the western side of the island, which has a more extreme coastline, but also offers beautiful sandy beaches with breathtakingly clear waters. Once you view the beauty of the Corfu, you will understand why the island has become such a highly popular tourist location. If you want to avoid crowds, it’s best that you stay away from the island from mid-June until the beginning of October.