Niagara Falls is made up of different waterfalls; the Canadian horseshoe, the American falls, and the bridal vell falls.
Niagara falls is the second largest waterfall in the world.
The water that flows over Niagara falls is from four of five different, fresh water, lakes.
Originally, over 5,000,000,000 gallons of water (approximately two trillion liters) per hour flowed over the edge of Niagara Falls.