Get Out and Enjoy Free Stuff in Chicago

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I have already shared information about Chicago Summer Dance. Other offerings with FREE admission include

No one has a good reason to be stuck in the house in this nice weather unless they just want to be.  So, gather your friends and family, and go out and have a good time for free (or low cost).

Also, if you learn of other free things to do in the city, please share with my viewing audience.