Seavey's Island side of Seavey's Island at the former site of Camp Long, a stockade named for Secretary of the Navy John Long, where 1,612 prisoners of war from the Battle of Santiago de Cuba were confined from July 11 to mid-September 1898 during the Spanish–American War. Camp Heywood, a Marine camp named after Colonel Charles Heywood, was located just north of the naval prison. It was occupied after the 1st Battalion's return from Cuba in late August until September 21, 1898. According to the National Trust for Historic Preservation, the Portsmouth Naval Shipyard has 62 buildings listed on the National Register
Cathedral Basilica of Our Lady of the Assumption, Santiago de Cuba de Santa Catalina, was elevated to the status of cathedral by Pope Adrian VI. Its construction ended in 1526. It was destroyed in the earthquakes of 1678, 1766, 1852 and 1932. In 1882 it received the title of minor basilica from the Holy See. It became a national monument of Cuba in 1958. Cathedral Basilica of Our Lady of the Assumption, Santiago de Cuba The Cathedral Basilica of Our Lady of the Assumption (), also called Santiago de Cuba Cathedral, is a Roman Catholic cathedral and minor basilica in Santiago de Cuba, in eastern Cuba. The cathedral fronts onto Céspedes