Fortín San Juan de la Cruz

Fortín San Juan de la Cruz (English: Fort Saint John of the Cross), most commonly known as El Cañuelo, was built on Isla de Cabras in the Palo Seco barrio of the municipality of Toa Baja, at the western end of the entrance to San Juan Bay, in Puerto Rico. The square coastal fort has massive sandstone walls that date back to the 1630s.