![](https://static.dezeen.com/uploads/2013/10/dezeen_State-archive-Duisburg-by-Ortner-Ortner_1sq.jpg)
NRW State Archive, Duisburg by Ortner & Ortner
A house-shaped tower with no windows rises from the roof of an ageing warehouse to create a new archive building for the state of North Rhine Westphalia, Germany, designed by Ortner & Ortner of Germany and Austria. More