The falls are situated on the Niagara River, which flows from Lake Erie to Lake Ontario. The Niagara Falls are actually a series of three waterfalls: the Horseshoe Falls, the American Falls, and the Bridal Veil Falls. The Horseshoe Falls is the largest of the three, with a height of 57 meters (187 feet) and a width of 670 meters (2,200 feet). The American Falls is 21 meters (70 feet) high and 323 meters (1,060 feet) wide, while the Bridal Veil Falls is 24 meters (79 feet) high and 17 meters (56 feet) wide.
The Niagara Falls are a major tourist destination and are visited by millions of people each year. There are a number of ways to see the falls, including boat tours, helicopter tours, and walking trails. The Niagara Falls are also home to a number of casinos, hotels, and restaurants.