 The Greenwood Pool and Splash Park in Gardner is open daily, 12 noon to 5 p.m., with weekday morning swim classes. Admission for public swimming, which includes the Splash Park, $3 for children under 17, $4 for adults, and $2 for seniors. Swim passes of 20 visits, $40 for children under 17, and $60 for adults. Children under 2 years old can enter free.