The Niagara falls are a small group of waterfalls in Niagara river. They are on the border between the USA and Canada. Their fall is about 100 metres.They are three waterfalls: The Horseshoe waterfalls, The American falls and The Bridal Veil falls.
The Bridal Veil fall is the smallest one. The Horseshoe falls are 729 metres wide and The American falls are 323 metres wide ( they are the widest waterfalls in North America).
They are a great sauce of hydraulic energy.
A lot of tourists visit Niagara falls, and some of them try to cross them.