The Niagara Falls, located on the Niagara River draining Lake Erie into Lake Ontario, is the collective name for the Horseshoe Falls and the adjacent American Falls, which combined form the highest flow rate of any waterfalls in the world and has a vertical drop of more than 50 meters. Horseshoe Falls is the most powerful waterfalls (vertical height along with flow rate) in North America.
The Niagara Falls are renowned both for their beauty and as a valuable source of hydroelectric power. Managing the balance between recreational, commercial, and industrial uses has been a challenge for the stewards of the falls since the 19th century.
Peak numbers of visitors occur in the summertime, when Niagara Falls are both a daytime and evening attraction. From the Canadian side, floodlights illuminate both sides of the falls for several hours after dark (until midnight). The number of visitors in 2009 was expected to top 28 million tourists a year.
The observation deck of the nearby Skylon Tower offers the highest overhead view of the falls, and in the opposite direction gives views as far as distant Toronto. Along with the Tower Hotel, it is one of two towers in Canada with a view of the falls.