Bernd Becher born 1931 in Siegen (Germany); Hilla Becher born 1934 in Potsdam (Germany); both live and work in Düsseldorf. The photography of the Bechers is a documentary photography. The buildings, mostly industrial manufacturing plants, regarded by the artists as "anonymous sculptures" appear isolated, without the workers. They are monuments in and of themselves, and at the same time symbols of functionality. In typological series, constructions or devices with the same functions and comparable structures are analyzed, always under the same -- objective -- shooting circumstances, in absolute abstention from an expressive treatment.