A hair-raising attraction has opened at the top of Toronto's CN Tower - for those with a head for heights.
The EdgeWalk allows daredevils to lean off the summit of the 1,168ft-high landmark.
Plucky visitors are dressed in special jumpsuits and fitted with safety harnesses before carefully stepping onto a newly-constructed 5ft wide walkway.
They then walk in groups of six while attached to an overhead safety rail via a trolley and harness system.
Customers are breathalysed before participating and checked for objects which may fall 116 stories to the street.
The £100 experience lasts an hour and a half, including a 30 minute outdoor walk.
A spokeswoman says: "Trained EdgeWalk guides are there to encourage participants to push their personal limits, allowing them to lean back over Toronto with nothing but air and breathtaking views of Lake Ontario beneath them."
Mark Laroche, president and CEO of the Canada Lands Company which owns the CN Tower, says: "The public has shown that they are ready and eager to push their limits by taking part in Toronto's most exciting attraction in decades."
EdgeWalk opened to the public this month and will operate seasonally from May to October in all weather except for electrical storms and high winds.