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
San Luis, Santiago de Cuba San Luis, Santiago de Cuba San Luis is a town and municipality in the Santiago de Cuba Province of Cuba. It is located north of Santiago de Cuba. The city was founded in 1827 on the location of a ranch. Arrival of the railroad accelerated its development. San Luis achieved municipality status on 19 August 1898. In 2004, the municipality of San Luis had a population of 88,496. With a total area of , it has a population density of . The municipality is divided into the barrios of Dos Caminos, La Luz, Majaguabo, Monte Dos Leguas, Norte and Sur.