Before 2017, the municipality was located in the Rheinwald sub-district, of the Hinterrhein district, after 2017 it was part of the Viamala Region. It consists of the village of Splügen and since 1 January 2006, Medels im Rheinwald. It is a haufendorf (an irregular, unplanned and quite closely packed village, built around a central square) located on a ridge between the Splügen pass and San Bernardino pass.