The view from the top of the CN Tower
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Thrill seekers look out at top of CN Tower

The CN Tower in Canada defines the Toronto skyline and has become the city's most extreme attraction.

EdgeWalk gives thrill seekers the chance to walk around a 5ft (1.5m) ledge at the top of the tower, hands free, with no railing, at 116 storeys above the ground.

Jeff Semple, a reporter for the Canadian Broadcasting Corporation, gave it a go.

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