Kaieteur Falls is one of the tallest and most powerful waterfalls in the world. Located in Kaieteur National Park, Guyana, the falls’ impressive combination of height and force make it a fearsome sight.Roughly four times taller than Niagara Falls, this single drop waterfall is a dramatic facet of the Potaro River – a wide, coffee coloured flow that runs for 140 miles (225 kilometres).