A massive Nazi air raid bunker might not sound like a great place to live, but with the right modifications — and the right location — a bunker can be a dream home. Karen and Christian Boros, art collectors and managers of a German advertising agency, live in such a place. Their early ’40s bunker, erected by Nazi Germany in the center of Berlin, has been wonderfully reconfigured as a airy penthouse apartment with an art gallery and storage space below to display and store their impressive collection of art. German site Freunde von Freunden has an interview with the owners as well as a wonderful video and fantastic photos of this incredible apartment.