Marlborough-Sudbury State Forest, located in Marlborough, Massachusetts, is a beautiful and diverse forest that offers visitors a range of outdoor activities and natural attractions. The forest covers over 4,200 acres and includes a mix of forests, meadows, wetlands, and ponds.

One of the main reasons to visit the Marlborough-Sudbury State Forest is for its hiking trails. The forest has over 14 miles of marked trails, including the Bay Circuit Trail which passes through the forest. Visitors can also enjoy fishing, boating, and swimming in the forest's ponds.

Specific points of interest within the forest include the Cowassock Woods, a mature forest with a diverse range of tree species, and the Pine Hill area, which offers scenic views of the surrounding landscape. The Hop Brook Marsh is also worth visiting for its wetland ecosystem and birdwatching opportunities.

Interesting facts about the Marlborough-Sudbury State Forest include that it was once used as a training ground for the Massachusetts National Guard and that the forest contains a number of historical sites, including the ruins of an old mill and a colonial-era cemetery.

The best time of year to visit the Marlborough-Sudbury State Forest depends on the activity you want to pursue. Spring and summer are ideal for hiking and water activities, while fall offers stunning foliage views and great birdwatching opportunities. Winter is also a great time to visit for snowshoeing and cross-country skiing.