The Gliwice Canal was originally built in the Province of Upper Silesia within Germany . Because the Klodnitz ( Kłodnicki ) Canal had become obsolete , it was decided in 1934 that construction of a new canal was more feasible than modernization of the older Klodnitz Canal , which closed in 1937 . The new canal , known as the '' ' Gleiwitz Canal ' '' ( ) , was built from 1935-1939 and opened for service in 1941 . On 8 December 1939 , it was renamed the '' ' Adolf Hitler Canal ' '' ( '' Adolf-Hitler-Kanal '' ) , in honor of Adolf Hitler , during the inauguration ceremony by Rudolf Hess . There were also plans to make it a part of the Danube-Oder-Canal project . After World War II , the canal and the surrounding territories ( see Regained Territories ) were placed under Polish administration according to the 1945 Potsdam Conference
Potsdam Conference
Potsdam Conference
Gliwice Canal