If you like history, especially King Phillip's War, you need to come visit. Open during library or daylight hours. No one will stop you from going at other times, but it would be hard for anyone to find and help you if you got hurt in the dark. Suggest sticking to daylight/library-open hours. Library has a bike rack. The URL above gives all the hiking trails of the Monastery plus some history. Come explore!
Very historical area. Nice easy winding trails. Park behind the monistery along chain link fence.