• Mona Island Lighthouse
• drna.gobierno.pr
• 787-999-2200, 787-999-2295FX
• Rio Piedras PR
• Established in 1900, deactivated in 1976. The ruins may be found in the southeast corner of the Island. Steel structure designed by Alexendre-Gustave Eiffel, listed on the National Historic Register.
• Info: Lighthouse