Nik Wallenda practicing in Niagara Falls, New York for June walk, photo bobc1369

Nik Wallenda practicing in Niagara Falls, New York for June walk, photo bobc1369

Nik Wallenda practicing for June 15 attempt to cross the Falls, photo bobc1369

Nik Wallenda practicing in Niagara Falls, New York for June 15, 2012 attempt to cross Niagara Falls. Photo by bobc1369/flickr.

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We're now into the last half of summer, which means you have one month left to pack in your must-do summer events in Toronto...