4. Fresh Pond Reservation
A park and local reservoir in Cambridge, the Fresh Pond Reservation is home to a 155 acre lake as well as 162 acres of land. There are trails around the lake that span over 2 miles and you can run, hike, or cycle in the area. If you fancy a game, then there is also a golf course located here, where you can enjoy the 9 hole green as well as taking in some of the flora and fauna of Cambridge at the same time.