This summer, Milwaukee Recreation is Now Playing Everywhere! Free summer playgrounds open June 18, 2018. Click on a marker for the playground name, address, hours, and site-specific information about free meals, Cool Spots (sprinklers), and wading pools. Type your address, zip code, or a playground name in the search field to find the location nearest you. Please call (414) 475-8811 during regular business hours with any questions.