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. He walked across a tightrope from Leo Burnett Building to both Marina City towers in Chicago in December 2014.