architecture steel mill factory building old factory industry industrial architecture leave steel production heavy industry steel ruin ruhr area industrial heritage monument places of interest historically metal industrial park duisburg north landscape park old factory old building break up industrial plant building landscape park rusty pipes lines stainless transient decay past pforphoto lost places broken transience lapsed ailing landmark forget atmosphere history black white black and white sw free pictures free photos free images royalty free free illustrations public domain
MichaelGaida (pixabay.com)
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