Memepunks sez,
Architects Lot-Ek have designed a public library made from the reclaimed fuselages of 727/737 passenger jets. The fuselages are the one part on an airliner that is more expensive to recycle than it is to just junk. Hundreds of old jet bodies litter the countryside, and now someone finally found a use for them.
Link to an architectural news website from Argentina (the architects' own website is all crudded up with Flash, with no direct linking possible to the library design images).