NIAGARA FALLS, N.Y. - Daredevil Nik Wallenda is setting up shop in Niagara Falls, N.Y. in preparation for his June 15 tightrope walk across the gorge.

Wallenda, of Flying Wallenda fame, will be at the Seneca Niagara Casino today, where his crews are erecting a 365-metre practice wire outside.

Wallenda says he'll begin twice daily practices on Saturday and the public can watch for free.

Wallenda is fresh off a 90-metre walk on Wednesday high above Baltimore's Inner Harbor -- where he lost his footing but didn't fall.

He expects it will take up to 45 minutes to walk an 548-metre tightrope over Niagara Falls, something that's never been done.

Previous daredevils going back more than 150 years walked tightropes farther downstream.