Industrial constructions aren't always aesthetically pleasing. But the renovated Iller power plant in Kempten, in southern Germany's Allgäu region, is extraordinarily beautiful. Just months after its completion, it is already a magnet for sightseers - a monumental sculpture beside the water.
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Outside, smooth concrete; inside, an impressive machine hall. The building by the Kempten architecture firm Becker won the German Architecture Prize for Concrete in 2011.