MADISON, Wis. —​ If you think the snow pile near your curb is big, you’ve got nothing on one Madison man.

Dave Green lives on Knickerbocker Street on Madison’s west side.

While stuck indoors, he decided to do cardio a few days a week since he wasn’t doing his normal 4-mile bike rides to work.

“I was really bored of walking up and down stairs inside,” he said, laughing.

Green began working with the snow in his front yard.

Madison has received almost 40 inches of it so far this winter.

Brick by brick, it turned into a masterpiece. It was taller than his house and outfitted it with a tunnel and slide.

This wasn’t new for him.

He started making snow sculptures in Syracuse, New York when his daughter was younger.

Soon, snow from his front and back yards wasn’t enough.

Luckily, his neighbors were more than willing to let him steal theirs.

“The neighbors have been very generous with their snow,” Green said.

On cold days, dozens of families would stop to check it out and play on the slide and tunnel.

“There was something like 50 kids coming by every day during the last bit of cold weather,” he said.

The slide is now closed since some of the structure is starting to melt.

When it’s 40 degrees out, the melting has started.

“It’s melting from the outside in, like an ice cream cone,” he said. “Quite unlikely to have any serious structural failures.”

Greene tried to get people interested in helping make it, but that hasn’t really worked out.

People were far more willing to enjoy it than help build it.

“I would teach classes if anyone wanted to know how to build snow sculptures at 10 degrees,” he said. “But so far, whenever I've advertised thatnobody shows up because it's 10 degrees out!”

He hopes next year maybe he’ll get a volunteer after this one fades from his front yard.

“I could easily have gone another 10 feet higher if I had some interns.”