832-195560 - Aerial photo, Emscher sewage treatment plant with digestion towers at night, Kolonie Emscher, Bottrop, Extraschicht 2009 cultural festival, night flight, Bochum, Ruhrgebiet area, North Rhine-Westphalia, Germany, Europe
832-138269 - Aerial view, internal wastewater treatment plant of the Bayer Schering Pharma AG on Rutenbecker Weg street, Bayer Schering Pharma AG, a German pharmaceutical company, Wuppertal, North Rhine-Westphalia, Germany, Europe
832-138265 - Aerial view, internal wastewater treatment plant of the Bayer Schering Pharma AG on Rutenbecker Weg street, Bayer Schering Pharma AG, a German pharmaceutical company, Wuppertal, North Rhine-Westphalia, Germany, Europe
832-138270 - Aerial view, internal wastewater treatment plant of the Bayer Schering Pharma AG on Rutenbecker Weg street, Bayer Schering Pharma AG, a German pharmaceutical company, Wuppertal, North Rhine-Westphalia, Germany, Europe
832-133589 - Modern sewage treatment plant, view over a primary clarifier and recirculation basin for nitrification on digester towers, Kulmbach, Bavaria, Germany, Europe
832-133590 - Modern sewage treatment plant, view over a primary clarifier and recirculation basin for nitrification on digester towers, Kulmbach, Bavaria, Germany, Europe
832-118764 - Aerial view, EmscherKunst art project, Silke Wagner, Glueckauf, Bergarbeiterproteste im Ruhrgebiet art project, digestion tank, Emscherkunst.2010 art project, art works on the Emscher river, Recklinghausen, Ruhr area, North Rhine-Westphalia, Germany, Euro
832-118765 - Aerial view, EmscherKunst art project, Silke Wagner, Glueckauf, Bergarbeiterproteste im Ruhrgebiet art project, digestion tank, Emscherkunst.2010 art project, art works on the Emscher river, Recklinghausen, Ruhr area, North Rhine-Westphalia, Germany, Euro
832-118800 - Aerial view, Seseke, tributary of the lip, SesekeKunst, Line of Beauty - the fifth treatment plant, Susanne Lorenz, cycle lane, Klaerwerk 4 four sewage treatment plant Kamen, Luenen, Ruhrgebiet region, North Rhine-Westphalia, Germany, Europe
832-118812 - Aerial view, EmscherKunst art project, garden art in the Bernepark park, former Bottrop sewage treatment plant, artist Piet Oudolf and GROss.MAX landscape architects, Bottrop, Ruhr area, North Rhine-Westphalia, Germany, Europe
832-118799 - Aerial view, Seseke, tributary of the lip, SesekeKunst, Line of Beauty - the fifth treatment plant, Susanne Lorenz, cycle lane, Klaerwerk 4 four sewage treatment plant Kamen, Luenen, Ruhrgebiet region, North Rhine-Westphalia, Germany, Europe
832-59560 - Aerial Photo, water production plants, clarifiers for the Ruhr River, Ruhr Valley, Witten, Ruhr Area, North Rhine-Westphalia, Germany, Europe