Sparrenberg Castle visitor centre by Max Dudler boasts striated concrete walls

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        Multi-tonal layers of <a title="Concrete archive on Dezeen" href="">concrete</a> resemble bands of sediment on the walls of this <a title="Visitor centres archive on Dezeen" href="">visitor centre</a> designed by Swiss architect Max Dudler for a medieval fortress in Germany (+ slideshow). <a href="" class="more-link">(more...)</a>