The Niagara FaLLs (Canada-USA)

With a total height of 51 m (167 ft) this cataract with 3 drops lies in the border of Ontario (Canada) and New York (USA). It was created during the Wisconsin Glaciation 10.000 years ago.
File:Canadian Horseshoe Falls with Buffalo in background.jpg
The HorseShoe Falls are one of the most voluminous waterfalls in the world! It´s 790 m wide (2.600 feet).
FrenchMan Samuel Champlain described it in his journals, during his exploration of Canada in 1604.
File:1880-22 Blondin.JPG
Before the American Nick Wallenda´s crossing of the Niagara Falls in 2012, FrencMan Charles Blondin did it in various ways  in 1859.
Maria Spelterini crossing Whirlpool Rapids on rope (image/jpeg)
The only woman to cross the Niagara Falls gorge, was the italian tightrope walker Maria Spelterini who crossed it three times in 1876.