This is one of the most famous and scenic waterfalls in the country. The best part of this 60-metre-high waterfall is that you can go behind it as there is a cave. Be sure to pack a raincoat because you will probably get wet when accessing it. If you are lucky and visit this area on a sunny day, you will see a beautiful rainbow.
Located roughly 120 kilometres from Reykjavík, it is definitely worth a visit for the magnificent scenery and it also makes for a great day trip.
If you are a Bieber fan, you will recognise this waterfall from his music video to I'll Show You.
Coordinates 63°36'55.646" N -19°59'17.407" E