Tourbillon Castle is a historic fortress located in the Valais region of Switzerland. Built in the 13th century, it sits on a rocky outcrop overlooking the town of Sion. The castle is known for its impressive architecture and strategic position, which provided a vantage point for defense against invaders. The castle features a circular tower and remnants of its original walls, showcasing the medieval construction techniques of the time. Today, Tourbillon Castle is a popular tourist attraction, offering visitors stunning views of the surrounding landscape and insights into the region's history.