A portion of the ruins at Fort Constitution in New Castle, the smallest and easternmost town in New Hampshire, and the only one located entirely on islands. Originally called Fort William and Mary during the period when New Hampshire was a North American British colony, the was captured by American Patriot forces, recaptured, and later abandoned by the British in the Revolutionary War. The fort was renamed Fort Constitution in 1808 following rebuilding. The fort was further rebuilt and expanded through 1899 and served actively through World War II. Photo by Carol Highsmith.