Sion is an old city located in the heart of the Swiss Alps. It is the capital of the canton of Valais and the seat of the bishop of Sion. The city has a population of 33,000 and is located at an altitude of 1,150 metres. The city is a mix of historic buildings and modern infrastructure. The old city is located on a hill and is surrounded by the new city. The old city is home to the cathedral, the bishop's palace, and a number of churches. The new city is home to the parliament, the law courts, and a number of banks. The city is also home to a number of museums, including the Swiss National Museum, the Olympic Museum, and the Museum of the History of Sion. The city is also home to a number of theatres, including the theatre of Sion, the theatre of Valais, and the theatre of the youth. The city is also home to a number of sports venues