Small park good for an easy walk with some fitness stops. Trails well marked but don't need to be as it's small and impossible to get lost in as it's flanked by an industrial park and two roads. Water park and picnic area at front of park with parking available for three dollars during season. Nice easy walk overall.
Brian P. on Billerica State Forest
This is more like a local kid's hangout than anything. A nice water park in the summer, with lots of stuff for parents and kids to do.