Parks

San Juan National Historic Site preserves stories of great ambition and aspirations. Countries fought for control of this tiny yet strategic island for centuries. Generations of soldiers have lived and worked within the forts. Visitors today are as inspired by these stories as they are by the beauty of the architecture and the ingenuity of design and engineering of this World Heritage Site.

Map showing location of park.

Protecting Wildlife at San Juan National Historic Site

2025-09-25

Discover how San Juan National Historic Site protects its wildlife while preserving historic structures, including efforts to manage invasive species like green iguanas.

ACTUALIZACIÓN-EL SITIO HISTÓRICO NACIONAL DE SAN JUAN INICIARÁ EL REEMPLAZO DE CÉSPED EN LOS TERRENOS DEL CASTILLO SAN FELIPE DEL MORRO

2025-09-19

El San Juan National Historic Site anuncia el inicio del proyecto de resiembra de césped, originalmente anunciado en noviembre pasado. La evaluación con radar de penetración terrestre y el estudio arqueológico han sido completados, y los trabajos comenzarán el lunes, 15 de septiembre de 2025. Se recuerda a los visitantes que el proyecto requerirá el cierre temporal de la parcela A, ubicado en la explanada del Castillo San Felipe del Morro, para permitir trabajos esenciales de renovación de terrenos. El proyecto forma parte del compromiso del Servicio de Parques Nacionales de preservar el paisaje cultural, mejorar la experiencia de los visitantes y asegurar la sostenibilidad a largo plazo de los recursos del parque.

UPDATE- SAN JUAN NATIONAL HISTORIC SITE WILL BEGIN SOD REPLACEMENT ON GROUNDS OF CASTILLO SAN FELIPE DEL MORRO

2025-09-19

San Juan National Historic Site announces the commencement of the sod project first announced last November. The ground-penetrating survey assessment and archaeological study have been completed, and work is set to begin on Monday, September 15, 2025. Visitors are reminded that the project will require the temporary closure of areas of Parcel A, located on the esplanade of Castillo San Felipe del Morro, to allow for essential grounds renovation. The project is part of the National Park Service’s commitment to preserve the cultural landscape, enhance visitor enjoyment, and improve the long-term sustainability of park resources.