The Château de Tourbillon is a historic castle located in Sion, Switzerland. Built in the 13th century, it was constructed by the Counts of Savoy to protect the region and assert their power. The castle is perched on a hill, offering stunning views of the surrounding landscape and the Rhône Valley. Today, the château is a popular tourist attraction, known for its impressive ruins and scenic surroundings. Visitors can explore the remnants of the castle, including its towers and walls, while learning about its rich history and significance in the region's past.