This Friday, Nik Wallenda makes an unprecedented walk across a cable suspended 200 feet above Niagara Falls. Others have traversed the gorge but never above the actual cascades. Still, when it comes to history-making stunts, Wallenda is in good company. Daredevils from around the world have wowed crowds with unbelievable feats for centuries. ( See this slideshow to learn more.)
What is your favorite history-making stunt? Vote for one below or tell us in the comments section and watch "Megastunts: Highwire Over Niagara Falls Live" Friday at 8 p.m. ET.