The trail is located within the San Juan National Historic Site.  The Paseo del Morro follows the massive sandstone walls, dating back to the 1630s, that surround the city of Old San Juan. Paseo del Morro once served as the maintenance road for the west section of the Old San Juan wall system. In 1998, the maintenance road was converted into a trail. The trail meanders along the coast of the Atlantic Ocean providing a historical experience unlike any other. Future plans include an entrance El Morro fort along with the continuation to San Cristobal fort.