The blue caves of Zákynthos, Greece.

Home to gorgeous scenery both above and under the sea surrounding it, Zákynthos (Zante) island is another top tourist destination in Greece. It is also easy to access, with a locale just 16 kilometers off Peloponnese's west coast in the Ionian Sea.

Two of the biggest boasts on this geographically intriguing island are its pebble and sand beaches — Shipwreck Beach is the most famous — and stunning sea caves like the Blue Caves, off the island's northern tip. Inside, the sparkling water reflects the color of the blue sky on the cave walls to create a magical glow. The Blue Caves are only one of the many watery attractions around this island. There is also excellent snorkeling and scuba diving.