Governors Island - Logan Intl Airport

This used to be an island in the holdings of Governor John Winthrop then became government property. In 1744 as site for coastal defense a block house and two-gun battery was built under British control. It became a four-pointed star fort called Fort Warren (1) from 1808-1814 and renamed Fort Winthrop in 1833. (Fort Warren as a name was transferred to George’s Island)

Secretary of War Henry Dearborn's report on fortifications for December 1811 described it as "...a star fort of masonry, mounting twelve guns...and brick barracks for 40 men...On the West head, a circular battery of ten guns mounted [and] on the South point, a circular battery, calculated for ten guns..."

A three-story casemated citadel for 16 guns was built over the star fort in 1846 with continued improvements such as multiple smaller gun batteries surrounding it starting in the 1840s. After significant damage due to a magazine explosion in 1901 it was abandoned as an active post in 1905. Stonework from Fort Winthrop was used to build the foundation of Storrow Drive. The island and fort’s remains were leveled in 1946 to enlarge Logan Airport for modern aircraft.

-Source Links-

https://www.bostonharborislands.org/blog/governors-island/

https://www.nps.gov/places/governors-island.htm

https://en.wikipedia.org/wiki/Governors_Island_(Massachusetts)

https://en.wikipedia.org/wiki/Fort_Winthrop

https://en.wikipedia.org/wiki/Harbor_Defenses_of_Boston - Boston forts and harbor defenses

http://www.fortwiki.com/Fort_Winthrop_(1)