Thundering Gullfoss waterfall in winter time, Iceland, Polar Regions

Thundering water at Gullfoss, Iceland's most famous waterfall, with sunlight streaming down through the spray, near Reykjavik, Iceland, Polar Regions

Waters of Gullfoss, Europe's biggest waterfall, thundering into a deep ravine, near Reykjavik, Iceland, Polar Regions

Water thundering over the Iguaco Falls, Brazil

Iguaco Falls, Brazil

Iguazu Wasserfall, Argentina

The Iguazu Falls at the border between Argentine and Brazil: Close up view of a cascade

The Iguazu Falls at the border between Argentine and Brazil: White-water rafting under the cascades

The Iguazu Falls at the border between Argentine and Brazil, Cascades in the devils throat and rainbow

Victoria Waterfalls, Victoria Falls, Zimbabwe

Footbridge with tourists at the Iguazu Falls at the border between Argentine and Brazil

Cascades with rainbow Iguazu Waterfalls Argentina Brazil

Niagara Falls, the tour boat "Maid of the Mist is approaching to the thundering falls, Ontario, Canada