Kostrzyn nad Odrą is in Gorzow Wielkopolski county; German: Küstrin or Cüstrin,
an industrial city on the Oder river at its confluence with the Warthe,
with (1981) 14.302 inhabitants. It has a 16th century castle, in which
Frederick the Great was held prisoner September - November 1730.
Gunnar Staack, 26 Oct 2000.
The Town of Kostrzyn nad Odra and Kostrzyn rural commune use the same
Jens Pattke, 9 Aug 2009