Nick Wallenda Nick Wallenda

Nik Wallenda has stunned again! The high-wire daredevil broke two records during Discovery Channel's live broadcast of his walk on Sunday night.

Wallenda, 35, walked more than 450 feet on a steel wire from Chicago's Marina City towers to the Leo Burnett Building-- at more than 50 stories above the Chicago River. The feat broke the world record for the steepest incline of a high-wire walk. But as if that wasn't daring enough, Wallenda then crossed — blindfolded! — 94 feet from Marina City's west tower to the east tower, breaking the record for the highest blindfolded hire-wire walk.

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"I feel incredible," Wallenda said following the stunt. "So thankful, obviously, that I made it across safely. Hopefully more people around the world are inspired, that if they work hard enough, they will achieve their goals."

Hosted by Today's Natalie Morales and Willie Geist, the event was broadcast on a 10-second delay so that it anything went wrong, "nothing that is insensitive or inappropriate" would air,The New York Times reported. Wallenda's last live stunt over the Grand Canyon had 8.5 million viewers during the two hours. As for his next attempt, Wallenda says he's planning to recreate his great grandfather Karl's greatest walk over Tallulah Gorge, Ga., during which he did two different headstands on the wire. Karl fell to his death at the age of 73 during a high-wire walk in Puerto Rico in 1978.

Watch some of Wallenda's record-breaking stunts below: for breaking news, world news, and news about the economy