This is the oldest surviving church in the Boston area. It is famous for its role in the midnight ride of Paul Revere. The signal system was ‘one lantern’ if the British were coming by land or ‘two lanterns’ if they were coming by sea. 2 lanterns were held in steeple to indicate the British were coming to Lexington and Concord by sea across the Charles River and not by land. The warning system worked!