What is "kastl"

Kastl may refer to the following places in Bavaria, Germany:

• Kastl, Upper Bavaria, in the district of Altötting
• Kastl, Amberg-Sulzbach, in the district of Amberg-Sulzbach
• Kastl, Tirschenreuth, in the district of Tirschenreuth
• Kastl Abbey, a former monastery in Kastl, Amberg-Sulzbach