High Quality Content by WIKIPEDIA articles! Tegernsee Abbey or the Imperial Abbey of Tegernsee (German Kloster Tegernsee, Abtei or Reichsabtei Tegernsee) is a former Benedictine monastery in the town and district of Tegernsee in Bavaria. Both the abbey and the town that grew up around are named after the Tegernsee, the lake on the shores of which they are located. The name is from the Old High German tegarin seo, meaning great lake.