Check out this rather stunning drone video of a well-known fortification in the French Alps, compliments of contributor and pilot FreD...///. It's called Miolan's Castle, and it's located in the Savoy region near the Italian border. Built in the 11th century or earlier, in the 16th century it was converted into a notorious prison. Its most famous inmate was the Marquis de Sade, who was able to escape from the prison in 1792. Once compared to the Bastille, it ceased holding prisoners in the 19th century.