4
architecture
blue
building
chemical
chemical plant
complex
complexity
dark
distillation tower
dusk
energy
environmental damage
evening
factory
fossil fuel
four
gas
gas refinery
gasoline
germany
grey
horizontal
illuminated
industrial
industrial building
industry
ladder
light
natural gas
night
northrhine westphalia
oil
oil industry
oil refinery
petrochemical plant
petrochemistry
pipe
plant
pollution
refinery
shiny
silver
sky
sunset
tall
technology
tower