Summer childrens activities

Hey i was wondering if anyone knew of any activities that you can do with you child during the summer. Here in sweden i'm taking my 5 month old to singing groups and church groups that meet weekday mornings where you sing and dance with your child and socialize with the other moms. I'm coming home to Racine this summer and would like to continue to do things like that while there she really likes looking at the other babies and it's nice to meet others with children. If anyone knows of anything like this in the racine, milwaukee, kenosha area i would appreciate any tips. Thanks