Just outside of Quebec City is Montmorency Falls. The first time we went, we went to the observation point below the falls and got drenched. The next time, we went up to the top and walked across the bridge. There was a standing rainbow from the spray. Both times, we ate lunch in the park's restaurant at the top of the falls. Here's their web site. wikipedia says the falls are almost 100 ft. higher than Niagara Falls.