

why it is historical: IT IS A FORT!!!!! ok you need more then that it now but come on. the fort was build in 1808 by Henry A. S. Dearborn in honor of Commodore Edward Preble. it was used in the war of 1812 and the civil war the Spring Point Ledge Light was added to the fort in 1897

sources: the stuff about the fort at the fort and
http://en.wikipedia.org/wiki/Spring_Point_Ledge_Light
http://en.wikipedia.org/wiki/Fort_Preble