- Who
- Niagara Falls
- What
- 22500000 people
- Where
- United States ()
- When
Niagara Falls, located on the border of Canada and the USA, receives 22,500,000 visitors a year and is the world's most visited waterfall. It is also the fifth most popular tourist attraction in the world, ahead of all of the Disneylands, Notre Dame Cathedral and the Great Wall of China.
