Keywords

• time lapse
• gastank
• gasholder
• gas holder
• timelapse
• energy
• condensation trails
• sky
• Tank
• observation
• tower
• outside
• stairs
• listed facade
• impressive
• outside view
• thick
• industrial
• heritage
• the Ruhr area
• time
• lapse
• landmark
• city
• town
• nrw
• technology
• UNESCO
• museum
• industry
• North Rhine-Westphalia