Niagara is a large waterfall on the Niagara River that are in the line of the international border between the US states of New York with the Canadian province of Ontario. This waterfall is about 17 miles (27 km) north northwest of Buffalo, New York and 75 miles (120 km) southeast of Toronto, Ontario.

Niagara is the name of a group of three waterfalls. The third waterfall is a waterfall Horseshoe (sometimes referred to as a waterfall Canada), waterfalls America, and the smaller Bridal Veil waterfalls are separated by an island named Luna Island from the main waterfall.

Although not very high, Niagara falls is very wide and most popular in the world. More than 6 million cubic feet (168,000 m3) of water per minute dropped and this is the most powerful waterfall in North America.

Niagara is also famous for the beautiful rainbow across the middle of the swift waterfall. The natural beauty found around Niagara make millions of people from all over the world visit it every day. Moreover, if not to see the waterfall is the most popular. So, too much foreign exchange flows to these two countries.

On March 29, 1848 for ice jams on the river for several hours because it is a better water flow is stopped completely. This is the only time known to have occurred. The waterfall is not really frozen, but the flow was stopped to the point where people actually walked out and recovered artifacts from the bottom of the river!

The flow over the American Falls was stopped completely for several months in 1969. The idea was to determine the feasibility of eliminating a large number of loose rock from the base of the falls to enhance the appearance of it. In the end the final decision is that the cost would be too great.