FC Sion , also known simply as Sion or formally as Football Club Sion , with the club's first team incorporated as Olympique des Alpes SA , is a Swiss football club from the city of Sion . Playing in the Swiss Super League , the highest tier of Swiss football, it has also won 13 Swiss Cups , more than any other club. The club was founded in 1909 and play their home matches at the Stade de Tourbillon .
