Iceland is riveted with waterfalls, thousands of them. There are cascading waterfalls, plunging waterfalls, multi-step, punchbowl and horsetail waterfalls. A top ten or so are especially dazzling. Some require creative transportation or trekking due to their challenging locations. Seljalandsfoss is one of the most famous due to its beauty and the fact that one can walk on a ledge behind it.