In my opinion this is one of the prettiest waterfalls in Iceland. I'm not sure what makes it so blue but it looks amazing! To get there after driving down a gravel road with lots of pot holes you then have to walk 10 - 15 minutes. Make sure you wear boots as it was quite muddy when we visited. Once you cross the small bridge with a sign that says 10km (don't worry Bruarfoss is not a 10km walk) head to the right and follow the squashed grass where people have walked previously.
Time Required: 45 minutes
Cost: free