The Fortress of Louisbourg on Cape Breton Island, Nova Scotia, is the largest historical reconstruction in North America, recreating the massive 18th-century French fortress that was twice besieged and captured by British forces. The original fortress, built between 1720 and 1740, was one of the most heavily fortified positions in the New World. Thousands of French soldiers, settlers, and fishermen lived within its walls, and many died during the sieges of 1745 and 1758, as well as from disease and the harsh Maritime winters. The reconstructed fortress has been the subject of ghost reports since its completion in the 1960s. Staff members dressed in period costume for the living history program have described encounters that seemed to go beyond their fellow interpreters — figures in authentic-looking French military uniforms who did not respond to greetings and vanished around corners. Visitors have reported hearing cannon fire on calm days, seeing lights in the windows of buildings after closing hours, and the smell of gunpowder near the ramparts. The fortress's fog-shrouded Atlantic setting, where the cold ocean mist rolls in without warning, creates an environment where the past and present seem to merge.