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Considering how phonebooks are all but obsolete, I'm not surprised that Richard Kroeker and his troop of Dalhousie University students have built an entire building with these useful pieces. An incredibly eco-friendly endeavor, this phonebook building is located in Nova Scotia.

Richard Kroeker used 7,000 phonebooks to complete this structure. In fact, the layers of books are so compact that wood can be screwed through them in order to dramatically alter the appearance of a facade or exterior surface.