A man, two woman, and a dog are in the left foreground, viewing a bridge that spans a river. The bridge is suspended on lines that are supported by two stone towers on each side of the river and anchored by lines to each shore. The bridge has two levels; a train travels on the top level, while people and horse-drawn carriages cross on the bottom. In the river, downstream from the bridge, multiple boats is visible. In the distance is Niagara Falls.

The Niagara Falls Suspension Bridge stood from 1855 to 1897 across the Niagara River and was the world's first working railway suspension bridge. It spanned 825 feet (251 m) and stood 2.5 miles (4.0 km) downstream of Niagara Falls, where it connected Niagara Falls, Ontario to Niagara Falls, New York. Trains used the upper of its two decks, while pedestrians and carriages used the lower. The bridge was the idea of Canadian politicians, and it was built by an American company and a Canadian company. It was most commonly called the Suspension Bridge, although other names included Niagara Railway Suspension Bridge, Niagara Suspension Bridge, and its official American name of the International Suspension Bridge.

• http://en.wikipedia.org/wiki/Niagara Falls Suspension Bridge