black and white skyline of the old town with houses rooftops, the tower of the cologne gothic cathedral and the tower of gtreat st

ages and architecture black building cathedral catholic christian christianity church city cityscape cologne culture dom europe european exterior german germany gothic heritage historic historical history house landmark landscape medieval middle monochromatic monochrome old outdoor religion religious rhine romanesque roof rooftop skyline spike spire top tourism touristic tower town travel unesco urban village westphalia white