It’s not hard to understand why many consider Niagara Falls a top natural wonder of the world. Or why it has been the location of some incredible (and now illegal) daredevil antics over the years. The second you see the mammoth Niagara River rumbling toward a 188-foot waterfall at about 20 to 30 (and up to 68) mph, your mouth will drop. The speed at which the river falls creates a misty fog and an unmistakable roar heard from miles away. From the top, crowds flock to the railings to feel the mist on their faces. As you follow the water’s path downward, boats, platforms and observation decks support colorful poncho-clad visitors.