Original: Treptow-K öpenick ( pronunciation k ö : p enik ( not t rep t ov - ) ) is the ninth borough of Berlin , formed in Berlin 's 2001 administrative reform by merging the former boroughs of Treptow and Köpenick .
Simplified: Treptow-K öpenick is a borough of Berlin , formed in 2001 by merging the former boroughs of Treptow and Köpenick .