amazing death-defying stunts

NIK WALLENDA

Karl Wallenda's great-grandson, Nik Wallenda, is also a high wire artist, and has nine Guinness World Records under his belt for various acrobatic feats. He became the first person to walk a tightrope stretched directly over the Niagara Falls, crossing from the U.S. side of the Horseshoe Falls to the Canadian side — covering 1,800 feet (550 meters) in 25 minutes — on June 15, 2012 (pictured). The next year (June 23, 2013), he went on to become the first person to cross a Grand Canyon gorge on a wire.

NIK WALLENDA

In 2011, Nik Wallenda completed the 100-feet-long (30 meters) high-wire crossing between the two towers of the 10-story Condado Plaza Hotel in San Juan, which Karl Wallenda had failed to achieve. Nik Wallenda also finished the highest incline tightrope walk with a 15-degree angle between two Chicago skyscrapers, while being partially blindfolded, on Nov. 2, 2014.

ROBBIE KNIEVEL

Robbie jumped 228 feet (69 meters) across the Grand Canyon on May 20, 1999. He, however, lost control of  his bike while landing and suffered a broken leg due to the crash.