Photo : JGS25 / Wikimedia Commons (CC BY-SA 4.0)
When it was built in the 11th century, the Château de Roche-sur-Loue, in the Doubs, was a fortified castle overlooking the Loue valley.
It was entirely rebuilt in 1756 by the Marquis de Grammont to turn it into a residence, and it is this 18th-century château that can be seen today. It is private property and is not open to visitors.
The Royal Saltworks of Arc-et-Senans, near Besançon, is the work of Claude-Nicolas Ledoux.
Before the 12th century, the lords of Cléron controlled the wooden bridge over the Loue on Franche-Comté's main salt road.
A Vauban masterpiece classified as UNESCO World Heritage, the Besançon Citadel is considered one of the most beautiful citadels in France.
The castle of Montfaucon was the cradle and home of a powerful and prestigious dynasty.
At Vaire-le-Grand visitors find green rooms, pools, topiary yews and covered walks.
Above the Pontarlier gorge, on the road to Switzerland, the Château de Joux, founded in the 10th century, was reworked by Vauban.