architecture
big
blue
building
chemical
chemical plant
cologne
color
colorful
complex
complexity
distillation tower
energy
environmental damage
factory
fuel
fuel and power generation
fumes
gas
gas refinery
generation
germany
illuminated
industrial
industrial building
industry
large
light
night
oil
oil refinery
panorama
panoramic
petrochemical plant
petrochemistry
pipe
pipeline
plant
pollution
power
refinery
shell
shiny
sky
smoke stack
steam
steaming
technology
tower
tube
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