Within the Paul Revere Heritage Site park stands the Copper Rolling Mill, the largest remaining structure of the original Revere Copper Company. The building, a victim of decades of neglect, was preserved through adaptive reuse in a process that took four years to complete.
The ground floor of the preserved structure structure houses The Northern Spy Restaurant. The upper floor is now home to Copper Mill Hall, a space that houses preview exhibits of upcoming programs that will be housed in the Historic Barn, while also serving as a venue for public and private programs and events.
