Tucked into Massachusetts' western corner, Sandisfield State Forest covers nearly 10,000 acres across the small towns of Sandisfield and New Marlborough — close enough to both Hartford and Albany to make an easy day trip, yet far enough off the beaten path that you'll rarely fight for space on the beach.

The forest has an interesting backstory. Massachusetts started buying up the land in the 1920s, when it was abandoned farmland, and declared it a state forest in 1933. The Civilian Conservation Corps — the Depression-era programme created under President Franklin D. Roosevelt — then did the heavy lifting: rehabilitating the beech and birch woodland, planting pines and spruces, damming an artificial lake, and building the beach, picnic grounds and trails visitors still use today.

The centrepiece is York Lake, a 35-acre man-made body of water sitting more than 1,500 feet above sea level. Its day-use area has a 300-foot beach with a roped-off swimming section, plus a gravel ramp for launching non-motorised craft — canoes, kayaks and sailboats welcome, motorboats not. Anglers have options too: the lake is regularly stocked with trout, and largemouth bass have recently turned up in catches as well.

If you'd rather stay on dry land, the York Lake Loop Trail is an easy 2.5-mile walk marked with blue blazes, hugging the shoreline and dipping in and out of the tree canopy. Hikers on AllTrails suggest finishing with a swim if the water's still warm. For the fall-leaf crowd, this is exactly the kind of spot that makes the Berkshires famous: cool air, mountain views and hardwood forest at its most colourful. There's also a large picnic area with tables, grills, bathrooms and shade.

The practical details are refreshingly simple. Entry is free, and the forest is open sunrise to just after sunset every day. Fishing is the only catch (pun intended): anyone aged 17 to 70 needs a Massachusetts freshwater fishing licence bought in advance.

Why should a traveller care? It's a rare combination — free admission, a swimmable lake, an easy loop trail and genuine fall-foliage scenery — in a corner of New England that doesn't get the crowds of the region's headline spots. The York Lake section sits in New Marlborough, a low-key, artsy town worth a wander in its own right, and you're under 40 miles from Bradley International Airport (BDL) near Hartford, which has nonstop flights from across the US. Culture is close by too: Hartford claims America's oldest public art museum, while Albany offers museums and lakeside beaches of its own.

In short: come for autumn colours or a summer lake day, bring a picnic (and a licence if you're fishing), and enjoy one of the Berkshires' 14 state forests without spending a cent on entry. Story sourced from Islands.