The Golden Waterfall , Gullfoss is a iconic tourist spot for Iceland. It is very significant and powerful waterfall, you can really feel the raw power of nature there. The water plummets into a canyon with walls up to 72 meters tall. If you are lucky enough you can see rainbows created by the mist from crushing waters. Here a link to their official website with 360degree view.
There are no rainbow during my visit, the sun is out but maybe its angle is not able to create rainbows. It is a very big scenic area, you can view the great Gullfoss from different angles, the best part is to walk to the closest part and feel the huge amount of water pouring down.
At Gullfoss I used my (borrowed from uni) canon 70-200 f4 L lens and created one of my favorite photograph from my trip. 🙂 I was amaze by that lens, and now I am really considering to get one, maybe the IS version. This photo was taken on a tripod of course, but the non-is version i borrowed is very hard to get a perfectly sharp image handheld, so most probably I will get myself a 70-200 f4 IS L in the future. 😀