The Coteau-du-Lac National Historic Site is located about 40 km southwest of Montréal on the shores of the St. Lawrence River. It features Canada’s first lock canal and the remains of a fort.

With a history spanning 7,000 years, the site was a portage and encampment location used by Amerindians to avoid the rapids, a military fortification, and a canal that opened the way for commercial shipping.

Hours of operation

Closed for the season
Complete schedule

Fees

Free admission for youth in 2021. Other fees still apply.
Detailed fees list 

Planning to visit during COVID-19?

Click here for details.

Sites nearby

  • Fort Chambly National Historic Site

    Roughly 30 kilometres southeast of Montreal, Fort Chambly rises proudly at the foot of the Richelieu River rapids. Built in 1711 to defend the colony, this stone fortification was preceded by three wooden forts.

  • Battle of the Châteauguay National Historic Site

    Discover the strategies behind the significant day of October 26, 1813 when outnumbered Canadian troops defeated the invading American army. Ride 14 kilometres by bike or car across the actual battlefield!

  • The Carillon Barracks
    Carillon Barracks National Historic Site

    Today, there is little sign of the military occupation – after the garrison departed, the building was renovated and served as a hotel for travelers. Since 1940, it has housed the Argenteuil Regional Museum.

  • Carillon Canal National Historic Site

    Watch boats pass through the Carillon Canal lock, navigating a 20-metre drop in a single operation. Stop in at the museum to inspect an interpretive panel about the history of the Ottawa River’s 19th century travellers.