Val Müstair () is a municipality in the Engiadina Bassa/Val Müstair Region in the Swiss canton of Graubünden. It was formed on 1 January 2009 through the merger of Tschierv, Fuldera, Lü, Valchava, Santa Maria Val Müstair and Müstair. Demographics Val Müstair has a population (as of ) of . Geography The Val Müstair (German: Münstertal, ) is a mountain valley in the Swiss Alps. It connects the Fuorn Pass, () with the Italian province of South Tyrol and the Vinschgau (). The Benedictine Convent of Saint John at Müstair (monastery), a World Heritage Site, was probably founded by Charlemagne, sharing history with its neighbor, the Marienberg Abbey. The most important villages in the Val Müstair are: Tschierv (), Valchava (), Sta. Maria (), Müstair () (all Swiss) and Taufers im Münstertal in South Tyrol. There are no other inhabited connected valleys, but the road over the Umbrail Pass (and the Stelvio Pass) is connected with Sta. Maria. The largest part of the valley is part of the Swiss canton of Graubünden. A small part lies within the Italian province of South Tyrol. The border is located at approximately 1245 meter between Müstair (1247 meter) and Taufers im Münstertal (1240 meter). The river in the valley is the Rom (Il Rom or Rombach). Naming convention Contrary to the common notion, where the beginning of a valley is referred as the "upper valley" and the end as the "lower valley", in Val Müstair these are referred to as "inner" and "outer" respectively. This is often reflected in location names. For instance, the valley is traditionally divided into three thirds: Terzal d'Aint (inner third) with Tschierv, Fuldera and Lü Terzal d'Immez (middle third) with Valchava and Sta. Maria Terzal d'Oura (outer third) with Müstair Incidentally, this division corresponds to the first three plateaus occurring on the Swiss part of the valley. Language The majority of the population in the new municipality speaks Romansh, with a large German speaking minority. The following table lists the historical language distribution of the formerly independent municipalities and also for the combined municipality: Heritage sites of national significance The Benedictine Convent of Saint John is both listed as a Swiss heritage site of national significance and a UNESCO World Heritage Site. Weather Müstair village has an average of 86.7 days of rain per year and on average receives of precipitation. The wettest month is August during which