Planken is a municipality in Oberland, Liechtenstein. It has four exclaves, two enclaves and a population of 473. Thus by population it is the sm…Planken is a municipality in Oberland, Liechtenstein. It has four exclaves, two enclaves and a population of 473. Thus by population it is the smallest municipality of Liechtenstein. It is located on the western slope of Drei Schwestern. The center of the main village is on 786m a.s.l.. Additionally the plateau of Oberplanken belongs to the municipality. It borders on Gamprin's exclave Nendler Berg, the Vaduz' exclave Dachsegg and Eschen in the North, on the Austrian municipality of Frastanz in the East and on Schaan in the South and in the West.