Faro de las Cabezas de San Juan, Cabezas de San Juan, Las Croabas, Fajardo Municipio, PR

Significance: In 1782, one hundred years before the final construction of Cabo San Juan Lighthouse, Fray Inigo Abbad y Lasierra, who wrote the first formal history of Puerto Rico stated that: "The mountain peaks of Loquillo and Laivonito ... can be seen from a far off distance in the sea, and through them sailors recognize Cabezas de San Juan, the reference point of those who regularly navigate by these islands [to direct heir course] towards the Honduras and Mexico Gulf."
Survey number: HAER PR-18
Building/structure dates: 1881-1882 Initial Construction
Building/structure dates: 1900 Subsequent Work
Building/structure dates: 1932 Subsequent Work
Building/structure dates: 1940-1950 Subsequent Work