avos is a municipality in the district of Prättigau/Davos in the canton of Graubünden, Switzerland. It has a permanent population of 11,109 (2015). Davos is located on the river Landwasser, in the Rhaetian Alps, between the Plessur and Albula Range. At 1,560 m (5,120 ft), it is the highest “town” in Europe.