From 1896 on the poet Joseph Victor von Scheffel and his family spent the summers on the penisula of Mettnau. After he had been raised tot he ranks of aristocracy he purchased the manor Mettnau and expanded the old vinyard tenant house to a castle. Today it is part of the Medical Rehabilitation Facilities METTNAU. Several works from Scheffel are exhibited in the hallway. Due to its official use the building can only be visited to a limited extent.