Seljalandsfoss is a stunning waterfall located in Iceland's South Region, right by Route 1. Dropping 60 meters, it's part of the Seljalands River originating from the Eyjafjallajökull volcano glacier. What makes it extra cool? Visitors can actually walk behind the falls into a small cave for a unique perspective and some awesome photos! Just watch out for the mist - you might get a little wet!

The entrance is free, but you have to pay 900 ISK for a day parking.