The CN Tower in Toronto, one of North America’s most iconic tourist attractions, is to launch a death-defying “high-walk” for visitors this summer.

The EdgeWalk, which opens August 1 at the 553 meter-tall tower, is billed as an opportunity for visitors to push their personal limits to the edge in a dizzying 30-minute walk some 356 meters above the ground – on a ledge just 1.5 meters wide.

Walkers follow the edge of the CN Tower’s 360 Degrees Restaurant, which is positioned approximately two thirds of the way up the CN Tower, the tallest structure in the Western hemisphere.

Although all participants wear safety ropes to secure them firmly to the structure, the new feature is billed as the highest “hands-free” ride in the world – leaving the members of each six-to-eight-strong group free to enjoy the spectacular views of Toronto and Lake Ontario.

It won’t come cheap, starting at CAD175 (€128), although that does include a keepsake video, photos, certificate and a re-entry to the CN Tower to enjoy the experience in a slightly less hair-raising way.

The urban adventure has been organized as part of the 35th anniversary of the CN Tower, one of Canada’s best-known attractions which welcomes millions of visitors every year.

Originally opened in 1976, it held the title of the tallest building on the planet until 2007, when the enormous Burj Khalifa in Dubai overtook it – today, the Burj Khalifa stretches 828 meters into the sky, although the glass-enclosed visitor viewing deck on the 124th floor seems almost tame by camparison.