Download coordinates as: Fort Heath was a US seacoast military installation for defense of the Boston and Winthrop Harbors with an early 20th-century Coast Artillery fort, a 1930s USCG radio station, prewar naval research facilities, World War II batteries, and a Cold War radar station.

[9] Constructed during the Endicott modernization period for fortifications, "the first concrete foundation for one of the disappearing guns at Grovers Cliff" was complete in May 1898,[11] and in 1900 the installation was renamed Fort Heath.

[citation needed] A federal survey marker ("MY0121—GROVERS") was set in the roof of the southernmost of the three fire control buildings at the fort in line at the northern end of Battery Winthrop.

[failed verification] The United States Coast Guard radio station at Fort Heath (call sign "NMF") opened on 12 November 1931, and was initially used for testing "traffic…relayed from Point Bonita, California."

[28] Subsequently, operating "until 1939 when the site was taken over by the Army", the USCG equipment "relocated to a former intelligence monitoring station at North Truro, Massachusetts.

[5] The United States Navy Field Test Station, Fort Heath, was established by 1938 and included a Massachusetts Institute of Technology research facility for "fire-control systems"[29] (cf.

[citation needed] The FAA operated the ARSR-1 until the mid-to-late[specify] 1990s,[38] and by 2005, the "Fort Heath property" acquired by the town had been converted to a municipal park.