CHICAGO (KABC) -- Daredevil Nik Wallenda wowed Chicago and the world Sunday with two hair-raising skyscraper crossings on high wires without a safety net or a harness, and performing one blindfolded.
Check out photos of his heart-stopping stunt above.
Daredevil Nik Wallenda, steps out on the wire backwards, for a live television show before his tightrope walk uphill at a 15-degree angle. (AP Photo/Charles Rex Arbogast)
The shadow of daredevil Nik Wallenda is cast against the West Marina Tower as he begins his tightrope walk uphill at a 15-degree angle. (AP Photo/Charles Rex Arbogast)
Daredevil Nik Wallenda begins his tightrope walk uphill at a 15-degree angle from the Marina City west tower across the Chicago River to the top of the Leo Burnett Building. (AP Photo/Paul Beaty)
Daredevil Nik Wallenda, left center in red, makes his tightrope walk uphill at a 15-degree angle. (AP Photo/Charles Rex Arbogast)
Nik Wallenda walks over the Chicago River uphill nearly 8 stories for Discovery Channel's Skyscraper Live with Nik Wallenda on Sunday, Nov. 2, 2014. (Jean-Marc Giboux/AP Images for Discovery Communications)
Nik Wallenda makes his tightrope walk uphill at a 19-degree angle, from the Marina City west tower across the Chicago River to the top of the Leo Burnett Building in Chicago. (AP Photo/Charles Rex Arbogast)
Nik Wallenda walks over the Chicago River uphill nearly 8 stories for Discovery Channel's Skyscraper Live with Nik Wallenda on Sunday, Nov. 2, 2014. (Jean-Marc Giboux/AP Images for Discovery Communications)
Daredevil Nik Wallenda finishes his tightrope walk uphill at a 15-degree angle, from the Marina City west tower across the Chicago River to the top of the Leo Burnett Building. (AP Photo/Charles Rex Arbogast)
Crowds begin to gather on Chicago's W. Wacker Dr. before daredevil Nik Wallenda begins his tightrope walk. (AP Photo/Charles Rex Arbogast)
Daredevil Nik Wallenda walks blindfolded on a tightrope between the Marina City west tower to the Marina City east tower in Chicago, Sunday, Nov. 2, 2014. (AP Photo/Paul Beaty)
Daredevil Nik Wallenda walks blindfolded on a tightrope between the Marina City west tower to the Marina City east tower in Chicago, Sunday, Nov. 2, 2014. (AP Photo/Paul Beaty)
Nik Wallenda walks across the Chicago skyline blindfolded for Discovery Channel's Skyscraper Live with Nik Wallenda on Sunday, Nov. 2, 2014. (AP Photo/Paul Beaty)