Gorges du Fier & Château de Montrottier
The Fier is a river that flows through Haute-Savoie and Savoie into the Rhône. Near Annecy, it has created a narrow canyon that is worth a look: The so called Gorges du Fier. The Castle of Montrottier is a medieval castle not far above the canyon, built to safeguard the crossing of the river.