Daredevil Nik Wallenda says he'll walk untethered on top of a 400-foot observation wheel in Orlando, Florida, next month.
Wallenda said Monday at a New York City news conference that the Orlando Eye will be moving when he attempts his feat April 29.
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The attraction in the heart of Orlando's tourist district officially opens in May.
In November, Wallenda made two hair-raising Chicago skyscraper crossings on high wires without a safety net or a harness.
Two of his previous tightrope walks took him over the brink of Niagara Falls in 2012 and across a Grand Canyon-area gorge in 2013.
Wallenda is the great-grandson of Karl Wallenda, who fell to his death during a tightrope stunt in Puerto Rico at 73.