Along the river you pass Moulin Fleming, the only windmill in Quebec that is "of Anglo-Saxon design."
Then you reach an island and migratory bird sanctuary.
And you encounter the rapids.
The rapids are called "Lachine" because they were once thought to be on the way to China.
There are rose bushes on land.
The river shapes the city and is a focal point of activity, in contrast, once again, to many U.S. cities where the body of water is afterthought. There are boardwalks and piers; there is outdoor recreation and riverside cafes, islands and beaches, museums and swimming pools and an amusement park. The city's most famous street is called the boulevard Saint-Laurent.
When the bike trail rejoins the canal, you have made a loop and have a view of downtown.