So Seljalandsfoss, a truly mesmerising and beautiful waterfall on the south coast of Iceland. It is by no means the largest, nor is it the most powerful in terms of volume of water. The beauty of Seljalandsfoss is its unhindered accessibility, not only to the base of the falls, but the ability to walk the whole way around it into the cave behind and out the other side allowing you to take in all angles and just be in awe of it.
Ok so full disclaimer you are going to get wet! When you see people saying to take a raincoat and waterproof pants, this isn't so you can play in the pool at the bottom, when climbing the stairs to the right of the falls there is often a lovely breeze that showers you in the mist from the falls. It is both refreshing and somewhat magical, but if you are wearing non waterproof clothing you are likely to get rather wet and once that initial "magic" has worn off - you will be left with rather wet cold clothes.
We've had the fortune of visiting Seljalandsfoss a number of times over the years and by no means is it a "hidden gem" anymore - in fact since a large computer firm used it as a screensaver the popularity has somewhat boomed meaning it can get very busy. If you are self driving and want to see it in all its glory without bus loads of other tourists, get there first thing in the morning or later in the day once they have departed.
We visited just after sunrise one morning and we only had to share it with the local sheep - they scared the life out of me when one emerged from behind the falls unannounced - turns out I hadn't had my coffee yet!
There is a paid carpark at rough 1000ISK but that also gets you access to toilets and a little cafe also. Be sure to checkout the other stunning waterfall Gljufrabui nearby. You'll need to have self driven to visit this as you will likely not have enough time as part of a big group tour to visit both Seljandsfoss and this one and fully enjoy both!