In Iceland, there are waterfalls everywhere. You cannot walk down a road without tripping over 4 of them, no joke. Honestly, the you get so used to seeing them that you stop taking notice after awhile, and I'm talking about examples with an honest 100ft+ drops. Here are three of note:
Gullfoss- This one is easy, and is a big tourist attraction. We must have arrived early, as we had the entire place to ourselves. Then again, the wind was so strong I was nearly blown over while taking a photo. Twice. The sheer amount of water passing over this one is mind-boggling, and the sound is deafening. You cannot see the bottom either, so it appears to disappear into the earth.
Svartifoss- the name means the 'Black Fall' for obvious reasons. The crystalline shaped lava columns appear to break off with alarming regularity, judging by how many lie broken around the base of the falls. The new National Theatre in Reykjavik, which happened to be across the street from our hotel, is said to be inspired by these shapes:
But then again, it may have been inspired by bad dreams after eating too many Sheep's Heads...no one is really sure.