Hacienda Azurarera Santa Elena, Sugar Mill Ruins, 1.44 miles North of PR Route 2 Bridge Over Rio De La Plata, Toa Baja, Toa Baja Municipio, PR
Significance: The ruins are the only extant remains pertaining to an industrial building in Puerto Rico dating back to the late 18th century. They illustrate the transition from a cattle-driven vertical wooden mill to steam technology. The impressive ruins are a classic example of Spanish Colonial architecture in proportion, design, and construction applied to sugar manufacturing needs.
Unprocessed Field note material exists for this structure: FN-5
Survey number: HAER PR-6
Building/structure dates: ca. 17q4 Initial Construction
Building/structure dates: after 1830 Subsequent Work
Building/structure dates: ca. 1891 Subsequent Work