"Bernd and Hilla Becher (Becher and his wife) are masters of contemporary photography from Germany. The Becher and his wife are known as pioneers in the postwar art world who have shown that" photography "is a work of art. At the same time, they also taught at the Düsseldorf Academy of Fine Arts and produced international artists such as Thomas Strut, Thomas Ruff, and Andreas Gursky, who had a great influence on the current photographic situation. The group of photographers influenced by Bernd Becher, who took photographs of the relics of modern industry, are collectively referred to as "the Becher school".Their characteristic lies in a unique method called "typology" that shows individual photographs collected by type arranged in a grid pattern so that they can be compared in various ways. Since the end of the 1950s, in Germany and other Western countries, the two have been working on commercial facilities such as water towers, blast furnaces, and mining furnaces, as well as housing in industrial areas, which were destined to disappear due to the rationalization of industry. Those are recorded with the same camera, the same way, and the same method. It chose a cloudy day when the subject was evenly lit, and shot it to create a flat image that did not emphasize the shape or story of the subject. Then, collected those photographs for each motif and showed them side by side on a grid to compose a document of the times and history. Their objective and systematic production style goes beyond the realm of photography and is highly regarded in the context of minimal and conceptual art.The shooting method is maintained at "front" or "45 degrees with respect to the front" so that comparisons can be made across times and regions. In the exhibition of works, they are sometimes arranged individually, but in most cases, individual photographs are arranged in a grid shape such as a quadruple, a six-set, or a nine-set so that they can be compared. This makes it even easier to understand the differences, commonalities, and features of each building.