Elevated close-up view of the Château de Joux (Joux Castle) on top of its hill with the surrounding valley at its feet, La Cluse-et-Mijoux - Doubs - Franche Comté (Franche Comte) - Eastern France. - Stock-Fotografie

Belvédère du Fort Mahler, La Cluse-et-Mijoux, Doubs, Franche Comte, France, June 12 - 2021. Picture shows a close-up view of the Château de Joux, on top of the hill it is built on, as seen from a belvedere freely accessible through a hike. The castle dates back to the middle age, around 1034, and was further modified at different era to adapt its structure to military technology advancements, being thus the only castle in France that allows witnessing the evolution of military architecture over 1000 years. The castle is classified as a historical monument since 1996.