Victoria Falls in Africa - when I first saw these falls I was utterly impressed. Turned out what I glimpsed through the trees was only a small part of the falls. Over a mile wide and 100 metres high, these are some amazing cascades. When you're there make sure you do the rafting. Class 4 and 5 all the way (and one class 6 which you walk around) - the BEST!
Victoria Falls, Zimbabwe The Victoria falls is 1 708 meters wide, making it the largest curtain of water in the world. It drops between 90m and 107m into the Zambezi Gorge and an average of 550,000 cubic metres of water plummet over the edge every minute.