
The Niagara River is a river that flows north from Lake Erie to Lake Ontario. It forms part of the border between the province of Ontario in Canada and the state of New York in the United States. There are differing theories as to the origin of the river's name. According to Iroquoian scholar Bruce Trigger, Niagara is derived from the name given to a branch of the locally residing native Neutral Confederacy, who are described as being called the Niagagarega people on several late-17th-century French maps of the area. According to George R. Stewart, it comes from the name of an Iroquois town called Ongniaahra, meaning "point of land cut in two".

The Adventurous Sex is a lost 1925 American silent drama film that was directed by Charles Giblyn and starred Clara Bow, Herbert Rawlinson and Earle Williams. The Howard Estabrook production was shot in studios in New York City and on location at Niagara Falls.
Fort Niagara is a fortification originally built to protect the interests of New France in North America. It is located near Youngstown, New York, on the eastern bank of the Niagara River at its mouth, on Lake Ontario.

Fort Schlosser was a fortification built in Western New York in the United States around 1760 by British Colonial forces, in order to guard the upper entrance to the portage around Niagara Falls, near the Porter-Barton Dock.

The International Control Dam, also known as the International Control Structure, operated by Ontario Power Generation, is a weir that controls the water diversions from the Niagara River and dispatches the water between the New York Power Authority and Ontario Power Generation in accordance with the terms of the 1950 Niagara Treaty. It was completed in 1954.

Niagara Falls is a group of three waterfalls at the southern end of Niagara Gorge, spanning the border between the province of Ontario in Canada and the state of New York in the United States. The largest of the three is Horseshoe Falls, also known as Canadian Falls, which straddles the international border of the two countries. The smaller American Falls and Bridal Veil Falls lie within the United States. Bridal Veil Falls are separated from Horseshoe Falls by Goat Island and from American Falls by Luna Island, with both islands situated in New York.

Niagara Glen Nature Reserve is a nature reserve located near the Niagara Whirlpool along the Canadian side of the Niagara Gorge. It is one of the best preserved remaining example of Southern Ontario's original Carolinian forest. The park is operated by the Niagara Parks Commission, an agency of the Ontario government. The park features overlooks of the whirlpool and gorge as well as several hiking trails through the Carolinian forest. The nature reserve protects a pristine area of the Niagara Escarpment. The nature reserve is open to the public daily, as long as weather permits.
Niagara Gorge is an 11 km (6.8 mi) canyon carved by the Niagara River along the Canada–United States border, between the U.S. state of New York and the Canadian province of Ontario. It begins at the base of Niagara Falls and ends down river at the edge of the geological formation known as the Niagara Escarpment near Queenston, Ontario, where the Falls originated about 12,500 years ago. The position of the falls has receded upstream toward Lake Erie due to the falling waters' slow erosion of the riverbed's hard Lockport dolomite, combined with rapid erosion of the relatively soft layers beneath it. This erosion has created the gorge.

The Niagara Whirlpool is a natural whirlpool along the Niagara River located along the Canada–US border between New York and Ontario. The whirlpool is located in the Niagara Gorge, downstream from Niagara Falls. The whirlpool's greatest depth is 125 feet (38 m).