If the Soca river in Slovenia isn’t the most beautiful river on this planet, it is most certainly in the running. Nicknamed “The Emerald Beauty,” it has appeared in multiple well-known poems and inspired awe in many a wanderer and tourist.

The nickname is, as the photos below attest to, well-deserved. It is one of the rare rivers that maintains an emerald-green or even bluish color all the way down its 138 kilometers (~86 miles), making it a favorite of landscape photographers the world over.

This, as you might expect, means there are some incredible photographs of this green-blue beauty on 500px… it was only a matter of time before it became the subject of its own collection.

This is just a small selection of amazing photos of an amazing river, to see more click here and browse to your heart’s content.

Or, if you have another river you think is better, or even just another incredibly picturesque place you think deserves its own collection on ISO, tell us about it in the comments!