The world's greatest waterfalls are found in many different countries. A vist to Iguazu on the border of Argentina and Brazil, or Victoria Falls in Zambia really make Niagra look like a poor relation. The world's highest waterfall is in Venezuela; a vist to Angel falls can be an adventure just getting there. Europe's 10 largest waterfalls are all in Iceland, Gulfoss and Godafoss being the most spectacular. The sources of the Nile provide the great falls at Lake Tana in Ethiopia and Lake Victoria in Uganda.