has been designated a National Historic Landmark This site possesses national significance in commemorating the history of the United States of America. The Observatory is the nation's only remaining maritime signal tower. It served as a communication station for Portland's bustling harbor brom 1807 to 1923, announcing the arrival of ships with a unique system of colorful signal flags. National Historic
hmdb.org
Portland is about 2 hours north of Boston on the Maine coast. It is quite a large city, and it is best to drive to the coast and park in one of the many car parks located along the harbour. From here you can walk to most...
igougo.com