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The park consists of multiple sites. Castillo San Cristóbal is one of the largest Spanish fortresses in the new world, and has a National Park Service visitor center off of Avenida Luis Muñoz Rivera. The center offers English and Spanish versions of an introductory film to the Historic Site, exhibits, and a bookshop. Castillo San Felipe del Morro (or el Morro) is a citadel with a commanding view of the entrance to San Juan Harbor, at the end of Calle Norzagaray. The extensive esplanade between the citadel and the town is popular for kite flying. Allow at least an hour to explore each fort. The park also includes most of the historic city walls, and tiny Fortín San Juan de la Cruz (or el Cañuelo) across the harbor on Isla de Cabras.
El Morro
A 16th-century citadel that lies on the northwestern-most point of the islet of San Juan, Puerto Rico. It is part of San Juan National Historic Site and was declared a World Heritage Site by the United Nations in 1983.
or the Palacio de Santa Catalina, "La Fortaleza" (or The Fortress in English) is the official residence of the Governor of Puerto Rico, who is Puerto Rico's head of Government. It was built between 1533 and 1540 to defend the harbor of San Juan. The structure is also known as El Palacio de Santa Catalina (or Palace of Santa Catalina). It is the oldest executive mansion in the New World. La Fortaleza was declared as a World Heritage Site by UNESCO.
Built in 1523, when it was called the Church and Monastery of Saint Thomas Aquinas. It is the second oldest church in continuous use in the New World and the oldest in the United States. Before Ponce de Leon was moved to the San Juan Cathedral, his body was buried here for 300 years.
Traditional entrance to San Juan.
Ballaja Barracks
Completed in 1863, and in 1881 a chapel was added. This building housed military personnel and is now a museum called Las Americas Museum containing Caribbean and European American arts and artifacts.
Museo y Parque Historico Ruinas de Caparra
Caparra was the first Spanish settlement in Puerto Rico. It was put several miles inland to keep it protected from pirates. The site is the ruins of the house/fort of Puerto Rico's first governor, Juan Ponce de León. A small museum displays some of the excavated artifacts. The displays are all in Spanish, though they do have a summary page in English upon request.