 Complete the following phrase:  Klaipėda Castle, also known as Memelburg or Memel Castle, is an archeological site and museum housed in a castle built by the Teutonic Knights in Klaipėda, Lithuania, near the Baltic Sea. The Teutons called the castle Memelburg or Memel, and Klaipėda was generally known as Memel until 1923, when Lithuanian military forces 