PHOTOS: Nik Wallenda's Chicago high-wire stunt

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Monday, November 3, 2014
Daredevil Nik Wallenda, steps out on the wire backwards, for a live television show before his tightrope walk uphill at a 15-degree angle.
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.
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.
Daredevil Nik Wallenda, left center in red, makes his tightrope walk uphill at a 15-degree angle.
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.
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.
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.
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.
Crowds begin to gather on Chicago's W. Wacker Dr. before daredevil Nik Wallenda begins his tightrope walk.
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.
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.
Nik Wallenda walks across the Chicago skyline blindfolded for Discovery Channel's Skyscraper Live with Nik Wallenda on Sunday, Nov. 2, 2014.
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PHOTOS: Nik Wallenda's Chicago high-wire stuntDaredevil 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

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.