Just outside of Old Quebec City, (as in 15 minutes by car or 40 minutes by public bus), is Montmorency Falls, or Chute Montmorency, which I prefer. The falls are beautiful, and there is a park around it. There is a pedestrian bridge across the top of the falls, and a cable car from the top to the bottom. There are boardwalks at the bottom, and they appear to be building more or possibly renovating the old ones, as currently you can only access one side plus a boardwalk across the river at the base of the falls.
View of the falls from the boardwalk across the river flowing from the falls
View of the falls from the boardwalk across the river flowing from the falls
View of falls from boardwalk near base of falls
Rainbow formed in mist at base of falls, photo taken from observation walk near top of the falls
Closeup of east side of falls showing geological layers and folding
Crossing pedestrian bridge above falls
Crossing pedestrian bridge above falls; downstream and outflow into St. Lawrence River