Burg Rotwasserstelz, Kaiserstuhl

Rotwasserstelz Castle, also called Rotenleim, Rötteln Castle, Röteln or Kaiserstuhl Castle, is a rock castle on a 343 m above sea level coral reef rock of the Malm in local area of the municipality of Hohentengen am Rhein in the district of Waldshut in Baden-Württemberg. It is located at the northern bridgehead of the river crossing to Switzerland opposite the Aargau municipality of Kaiserstuhl.