MINNEAPOLIS (WCCO) – Once a month during the summer, the city of Minneapolis shuts down a busy street so neighbors can mix and play.

On Sunday it was Franklin Avenue East from Portland Avenue to 28th Avenue.

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That’s a 22-block stretch with people enjoying various activities in the middle of the street.

One of the most interesting sights was a pop-up park that featured cardboard and other art activities.

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Plenty for the kids’ imaginations.

“The idea is that kids can work collaboratively and just use imagination and build whatever they want. So we have a lot of cardboard, we have some fabric,” Seinz Lennes, of Twin Cities Adventure Playground, said.

Organizers hope someday to build a permanent play park in Minneapolis.

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They also told WCCO they weren’t worried about the rain. The cardboard might get wet, but that’s just part of the playing process.