1. Niagara Falls, Ontario: more than 12 million

The legendary falls splashed to the top 10 of our U.S. tourist attraction list, and it's no surprise that Niagara Falls ranks as a top Canadian draw as well. The thundering waters straddle the two countries' borders, and it's tricky to parse out which nation's soil the viewers appreciate the Falls from—it's often both (The Niagara Falls Bridge Commission estimates 12 million annual cross-border passages on its bridges). The City of Niagara Falls (Canada) estimates "more than 12 million annual visitors" to the Canada side.

SOURCES: Office of the Mayor, City of Niagara Falls

SEE ALSO: Less Traveled Canada