Meet Calgary's mayoral candidates

 A total of 27 candidates are vying to become Calgary's next mayor, 24 of whom are pictured in this compilation. (supplied images) A total of 27 candidates are vying to become Calgary's next mayor, 24 of whom are pictured in this compilation. (supplied images)

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Exploring a tunnel deep below Niagara Falls

Turbines that once harnessed the powerful energy of Niagara Falls into a great source of electricity came to a halt years ago. But the secrets deep below the power station are coming to life once again. Visitors can now explore the former cathedral of power and a new tunnel that opens to a spectacular view of the falls.