Daredevil Nik Wallenda has become the first person to walk across Niagara Falls on a tightrope.

Tens of thousands of people gathered at the falls and millions more were believed watching on television as Wallenda crossed some 200 feet in the air on a two-inch-wide tightrope over the raging waters of Horseshoe Falls, the largest of the three falls that make up Niagara Falls.

Wallenda trotted in his final steps across the tightrope and stepped into Canada, barely 25 minutes after he started.

After he greeted his wife and family, Wallenda was approached by customs agents, who asked him for his passport, which he presented.