1. Sardinia – Italy

Sardinia might just have Italy’s best-kept beach secret: Cala Goloritzé. The hike to reach it is rugged but rewards you with one of the most breathtaking beaches in Europe. Picture towering limestone cliffs framing translucent turquoise waters so pure you can see every pebble beneath. Sardinia’s coastline is dotted with dozens more hidden gems, each offering its own slice of Mediterranean paradise. If you love clear water and scenic seclusion, Sardinia is calling.

Final Words

From Caribbean hideaways to remote lakes in Siberia, these 20 destinations prove that the clearest waters in the world come in many forms. Wherever you choose to dip your toes, one thing's for sure—you'll find yourself lost in their incredible, crystal-clear beauty.