A small historical sign near the parking area describes the history of the grist mill on site and anything else of historical significance in the area. Either take the paved path to the right of the grist mill and follow it into the park, or go to the street, walk up the sidewalk and across the park before heading down the hill into it. The paved path in the park will eventually take you through Brewster Gardens and to the waterfront where Pilgrim Memorial State Park awaits.
For this cache, you won't need to leave the park, which is a nice place to sit and enjoy the babbling brook if you choose to. Please put the cache back where you found and note that there may be many people around in the warmer months. Hope you enjoy!