Bourgogne-Franche-Comté · Doubs, France
A fortress stacked on a Jura crag above the cluse de Pontarlier, guarding the road to Switzerland for a thousand years. Vauban modernised it; its cells held Mirabeau — and Toussaint Louverture, hero of the Haitian Revolution, who died a prisoner here in the mountain cold of April 1803.