abandoned
chemical
chimney
color
darkness
duisburg
duisburg landschaftspark
dusk
ecology
energy
engineering
environment
equinox
factory
gas
green
hdr
illuminated
industry
installation
landschaftspark
light
lung
metal
night
nightlife
nightvision
oil
old
petrol
petroleum
pipelines
place
plant
production
refinery
shutter
slow
sphere
stars
stem
technology
tower
valve