who walked over niagara falls on a tightrope
Nik Wallenda Nikolas "Nik" Wallenda (born January 24, 1979) is an American acrobat, aerialist, daredevil, high wire artist, and author. He is known for his high-wire performances without a safety net. He holds nine Guinness World Records for various acrobatic feats, but is best known as the first person to walk a tightrope stretched directly over Niagara Falls.