Sion, Switzerland Sion, Switzerland Sion (; ; ; ) is a Swiss town, a municipality, and the capital of the canton of Valais and of the district of Sion. it had a population of (known as "Sédunois(e)"). On 17 January 1968, the former municipality of Bramois merged into the municipality of Sion. On 1 January 2013, the former municipality of Salins merged into the municipality of Sion, and on 1 January 2017, Les Agettes did the same. Landmarks in Sion include the Basilique de Valère and Château de Tourbillon. Sion has an airfield for civilian and military use, where it serves as
Sion, Switzerland Valais chose Sierre. In 1840, the Upper and Lower Valais were reunited. But four years later, Sion was occupied by Upper Valais troops during the beginning of the Sonderbund War. Federal troops occupied Sion in November 1847. Sion lost to Turin, Italy in its bid to host the 2006 Winter Olympics. Sion also bid for the 2002 Winter Olympics, which it lost to Salt Lake City, and the 1976 Winter Olympics, which it lost to Denver (the games were reassigned to Innsbruck when Denver residents voted down additional funding). As of February 2018, Sion is one of four cities participating