Martens has spent weeks building the outdoor ice surface, along with the bleachers and "boards" made of thousands of snow blocks he cut by hand.
"There's well over 3,000 blocks that have to be made…. They're all hand-cut, yeah, with a hand saw," he told CBC News Friday, hours before he officially opened his arena.
Last year, the 69-year-old built a snow fort and toboggan slide just for fun. Work on the ice rink began in December.
Martens was quick to shrug off the sheer size of his winter wonder, which can seat hundreds of people.
"If you look back centuries ago, what did they do in Egypt? They built pyramids — big stones … a couple of thousand pounds," he said.
"This is nothing compared to that."
Even more remarkable is Martens's successful battle with cancer, according to his wife, Grace, who said he was weak and critically ill five years ago.
"He was so, so sick for quite a while," she said.
"Then to see him like this? I can't even put it into words, what that does to you. It's really, really awesome."
On Friday, as he stood on the ice rink he built himself, Martens said, "Right now I'm just so thankful…. I feel really good. And I could just tackle the world, you know."
The hockey rink will help raise money for four children's charities. Canadian Tire has already signed on as a sponsor, donating at least $5,000.Suggest a correction