James Island / Kunta Kinteh island, The Gambia: jetty and crumbling walls of Fort James, its foundations eroded by the river Gambia - a UNESCO world heritage site, occupied by the Portuguese in 1456. In 1651 the Duchy of Courland, in modern Latvia, built a fortress, Fort James, formerly Jacob Fort after Jacob Kettler, the Duke of Courland - it became famous after Alex Haley's book "Roots" for its later role in the triangular slave trade - photo by M.Torres