A former Nazi air raid shelter erected in 1942, this Berlin structure is currently the residence of German advertising exec Christian Boros and his wife, Karen Lohmann, an art historian. The two were looking for a large space with historical significance, something that previously had a different function. They looked at a hospital, a swimming pool, and a school but chose the bunker because, as Boros puts it, "it was the impossible." While the couple transformed the penthouse into their living space, they filled the bottom four floors with more 100 pieces of art.
Scroll below for a tour of this one-of-a-kind home.
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