Greece 🇬🇷 

Melissani is an incredibly picturesque cave lake located on one of the Ionian Islands. It is considered one of the most beautiful among the natural attractions of Greece. 

Looking at the photo, it's hard not to agree with this. 

A transparent azure lake, a cave with grottos and bizarre stalactite formations, ancient myths – these are the main reasons why thousands of tourists seek to see this place.