Niagara Falls is a set of massive waterfalls located on the Niagara River in eastern North America, on the border between the United States and Canada. Niagara Falls (French: les Chutes du Niagara) comprises three separate waterfalls: the Horseshoe Falls (sometimes called the Canadian Falls), the American Falls, and the smaller, adjacent Bridal Veil Falls. While not exceptionally high, Niagara Falls is very wide. With more than 6 million cubic feet (168,000 m³) of water falling over the crestline every minute it is the most powerful waterfall in North America and possibly the best-known in the world.

Niagara Falls is renowned for its beauty, and is both a valuable source of hydroelectric power and a challenging project for environmental preservation. A popular tourist site for over a century, the natural wonder is shared between the twin cities of Niagara Falls, New York and Niagara Falls, Ontario.

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