The EdgeWalk at Toronto's CN Tower

Daredevils in red jumpsuits can teeter around the outside edge of Canada's tallest structure next month as Toronto's CN Tower opens a new attraction for thrill-seekers and those wanting to overcome fear. A reporter leans over the edge of the catwalk during the media preview for the "EdgeWalk" on the CN Tower in Toronto, July 27, 2011. Participants are strapped in to a harness that is attached to a guard rail while walking around the catwalk on the structure 356m (1,168ft) off the ground. REUTERS/Mark Blinch (CANADA - Tags: SOCIETY CITYSCAPE IMAGES OF THE DAY)

The EdgeWalk at Toronto's CN Tower is an adrenaline filled excursion around an open-mesh metal walkway almost a quarter of a mile above the ground. There's no guard rail and no hand holds, just an uninterrupted view of the Toronto skyline and a through-the-mesh view of the ground, 1,168 feet beneath your feet. (Reuters)

Feet are seen in a view from the catwalk during the media preview for the "Edgewalk" on top of the CN Tower in Toronto, July 27, 2011. Participants are strapped in to a harness that is attached to a guard rail while walking around the catwalk on the structure 356m (1,168ft) off the ground. REUTERS/Mark Blinch (CANADA - Tags: SOCIETY CITYSCAPE)

A tour guide demonstrates the length of the rope during the media preview for the "Edgewalk" on top of the CN Tower in Toronto, July 27, 2011. Participants are strapped in to a harness that is attached to a guard rail while walking around the catwalk on the structure 356m (1,168ft) off the ground. REUTERS/Mark Blinch (CANADA - Tags: SOCIETY CITYSCAPE)

A reporter walks on the edge of the catwalk during the media preview for the "EdgeWalk" on the CN Tower in Toronto, July 27, 2011. Participants are strapped in to a harness that is attached to a guard rail while walking around the catwalk on the structure 356m (1,168ft) off the ground. REUTERS/Mark Blinch (CANADA - Tags: SOCIETY CITYSCAPE)

Reporters lean back, 1,168 feet over Toronto's downtown, while participating in a media preview of the new EdgeWalk attraction on the CN Tower Wednesday, July 27, 2011. Participants are strapped into a harness as they walk along a walkway around the CN Tower. (AP Photo/The Canadian Press, Darren Calabrese)

Canadian Press reporter Alex Posadzki leans over Toronto's downtown while participating in a media preview of EdgeWalk on the CN Tower on Wednesday, July 27, 2011. (AP Photo/The Canadian Press, Darren Calabrese)

Source: Yahoo News