Mary O'Malley State Park, 59 Commandants Way, Chelsea, MA 02150, US

This neighborhood park has something for everyone. Nestled between Hanson and Waltham streets, the park features two children's play areas, a half basketball court, multiple benches and a circular grass field. Leashed dogs are allowed in the park, and both play areas are gated. The toddler play area contains plastic, age-appropriate toys and structures, most of which have been donated by neighbors and volunteers. A separate playground for older children features a large wooden play structure complete with slides and monkey bars.