Dunn State Park 
289 Pearl St
Gardner, MA 01440
978-632-7897
http://www.mass.gov/eea/agencies/dcr/massparks/region-central/dunn-state-park.html
State Park: Birding, Fish, Hike, Picnic, Walk, Water Sports
This 119 acre park features a 20 acre pond, walking trails, swimming, picnicking, and play equipment. Private canoes and non-motorized boats are allowed on the pond, and paddle boats can be rented during the summer.