german industrial culture unesco world heritage in ruhr area

abandoned architecture attraction brick building business clouds coal cokery coking colliery complex culture europe european factory famous food german germany heritage industrial industry katernberg kokerei landmark landscape metal mine mineshaft mining monument museum north piping pits plant rhinewestphalia route ruhr ruhrgebiet ruhrkohle schacht schonnebeck shaft sky steel stoppenberg tourism travel unesco urban vintage work world zeche zollverein