"This site was built by the Army in early 1965 in response to the Cuban Missile Crisis and was the facility for the Nike Missile site titled HM-95 D/2/52. These Nike sites were split into two locations. One was the radar communications and control facility, where they did targeting and fire control, and the other was the Launcher area, with the actual missile silos. All the Nike Missile sites in South Florida were shut down and decommissioned in June 1979 and the site was most likely abandoned and partially dismantled at that point. In 1980 the site was revived and apparently was used in some capacity during the Mariel Boatlift to house immigrants, but eventually became unused again. It subsequently became a penit that got popular in the early 2000's."
Paraphrased from miamigrafitti.com