Situated on Île-aux-Noix in the Richelieu River, Fort Lennox, built by the British between 1819-1828, occupies one of the most strategic sections of the broader Champlain-Richelieu Valley. The island was the site of a French fort besieged in 1760 and in 1776 American forces retreated to Île-aux-Noix where hundreds died of smallpox and fatigue, before retreating back up Lake Champlain. Today the 19th century fortifications have received a major restoration by Parks Canada that manages the site.
Visit Fort Lennox National Historic Site
Hours:
Fort Lennox National Historic Site is closed for the 2026 season
- Due to issues with humidity and air quality in certain historic buildings, as well as operational constraints, Fort Lennox National Historic Site is suspending its activities for the 2026 season.
- This closure is necessary to complete assessment and remedial work, as well as a review of operations for the future.
- We thank you for your patience and understanding.
*Crossings occur every 30 minutes.
Fort Lennox National Historic Site:
1 61e Avenue, Île-aux-Noix,
QC J0J 1G0, Canada
Phone: (450) 291-5700
Email: [email protected]
parks.canada.ca/lhn-nhs/qc/lennox