Take highway 20 east, in direction of Quebec city, exit 112 - Beloeil / St-Marc-sur-Richelieu. After exiting, turn left on 223 north and keep driving for 7 km. You will find a large parking on your left, facing Les Trois Tilleuls, which is on your right near the river. If you come by Champlain bridge or Jacques-Cartier bridge, reach highway 30, continue on highway 20, in direction of Quebec city and follow indications above.