It was intended to protect New France in general (and Montreal in specific) from attack from hostile natives and the English.

Today, the fort is run by Parks Canada and is designated a National Historic Site of Canada, and houses a museum and interpretive center, and hosts historical re-enactments of military drills (as well as a number of contemporary cultural events).

It was built in 1843 to bypass several kilometers of successive Richelieu River rapids between the towns of Chambly, QC, and Saint-Jean-sur-Richelieu.

Part of a series of waterways connecting the Saint Lawrence River and New York City, Chambly Canal was built to facilitate commercial traffic between Canada and the United States.

Chambly is home to the massive Fort Chambly, built with local stone between 17 in the style of Vauban's classic French fortifications.

It was built at the mouth of a large basin, on the site of successive wooden forts dating back to 1665.

Other than access to the bathrooms, points of service are available to visitors at Locks Nos.

running along the Richelieu River past Saint-Jean-sur-Richelieu, Carignan, and Chambly.All this region is very level and full of forests, vines and butternut trees.No Christian has ever visited this land and we had all the misery of the world trying to paddle the river upstream.Near by are meadows were no Indians live, by reason of the wars.At the rapids there is very little water, but it flows with great swiftness, and there are many rocks and boulders, so that the Indians cannot go up by water; but on the way back they run them very nicely.Fort Chambly was the largest in a series of fortifications on the shores of what was known as the Iroquois River (later known as the Chambly River, finally becoming the Richelieu River in the nineteenth century).