Sion, Switzerland and library, the church of the Notre-Dame de Valère and the church of St-Théodule. The remains of a neolithic settlement and the modern city of Sion are also on the list. The entire town of Sion and the village of Bramois are both part of the Inventory of Swiss Heritage Sites. A characteristic of Sion is its medieval townscape, dominated by the hills Valère () with the Basilique de Valère (12th–13th century), and Tourbillon () with the ruins of the Tourbillon Castle. The Valère Basilica is the church on top of the southern of the two mottes, at the east
Maurice Sion Maurice Sion Maurice Sion (17 October 1927, Skopje – 17 April 2018, Vancouver) was an American and Canadian mathematician, specializing in measure theory and game theory. He is known for Sion's minimax theorem. Sion received from New York University his B.A. in 1947 and his M.A. in 1948. He received from the University of California, Berkeley in 1951 his Ph.D. under the supervision of Anthony Morse with thesis "On the existence of functions having given partial derivatives on Whitney's curve". Sion was a member of the mathematics faculty at U.C. Berkeley until 1960, when he immigrated to Canada with his