From the top of Castillo San Felipe del Morro you get an excellent view of Isla de Cabras. Goats Island in English. The Spanish took advantage of its strategic position on the other side of San Juan Bay by building Fortín San Juan de la Cruz (Fort Saint John of the Cross) in the mid-17th century. These two forts could effectively crossfire against approaching enemy ships. More commonly called El Cañuelo, the small historic citadel is a UNESCO World Heritage Site. Unfortunately, it is closed to visitors. The island also served as a leper colony. The area is now the Isla de Cabras Recreational Park. This is a great place for a scenic jog, stroll or picnic.