A new extreme attraction is asking thrill-seekers to experience the world's highest full circle "hands-free walk."

The CN Tower announced on Monday that it will open Edge Walk, a five-foot wide ledge encircling the top of the structure's main pod 116 stories above the ground, at the end of July.

"EdgeWalk is both thrilling and unique and will push visitors to their limits – literally and figuratively," Mark Laroche, president and CEO of the company that owns and runs the CN Tower. "This will be among Toronto's, if not the world's, greatest attractions."

Adventure lovers will walk in groups of six to eight, while attached to an overhead safety rail via a trolley and harness system.

Jack Robinson, the chief operating officer of the CN Tower, said that while similar walks are already attractions in New Zealand and parts of Asia, they are about half the height of the CN Tower.

"Edgewalk is going to be a walkway at the top of the tower and you won't have a handrail," Robinson said.

Participants in the 150 meter walk will have to wear a regulation jumpsuit, rubber-soled sneakers and a safety harness.

Guides will also help visitors "lean back" over Toronto should they wish the extra thrill and meet height and weight parameters.

Robinson said weather at the Edge Walk's height will be monitored by the hour.

"In fact we're going to have a weather station up there. The real thing is extreme cold, we won't do it. More so than that, extreme wind," said Robinson.

The walk itself will last between 20 to 30 minutes, and visitors will have to have a one hour information session before the walk.

The Edge Walk will cost $175, and will include a video keepsake, a photo and certificate. Tickets go on sale on June 1.

For further information, visit the website.

With files from CTV Toronto's Andria Case.