June 4, 2010 (CHICAGO) --
Cook County Forest Preserve swimming pools open Saturday for the summer season, and this year, swimming will be free for the opening weekend.The district operates three swimming pools, one of which is the Whealan Pool Aquatic Center at Devon and Milwaukee in Chicago. It'll be busy if the weather holds out Saturday. The other two pools are at Ogden and Harlem in Lyons and at 159th and Torrence in Calumet City.
Normally, the admission price is $5 per person and $3 for kids ages 4 to 12.