Fortín de San Gerónimo
Fortín de San Gerónimo de Boquerón is a small fort located at the mouth of the Condado Lagoon , across from the historic sector of Miramar in San Juan , Puerto Rico . 
<triplet> Condado Lagoon <subj> San Juan <obj> located in the administrative territorial entity <triplet> San Juan <subj> Puerto Rico <obj> located in the administrative territorial entity <triplet> Puerto Rico <subj> San Juan <obj> contains administrative territorial entity