A glitchy architectural rendering of bread.
Blimp dock, from sometime in the 1920s (via Library of Congress, via Core77)
Fantastic proposed architectural monument to Isaac Newton by Etienne-Louis Boullee from 1784. Never built, I particularly like the glowing orb rotating within a large sphere in the second image.
The ceiling of Palazzetto dello Sport, the Olympic basketball arena constructed in 1960 for the Olympic games in Rome, Italy.
Via (and lots more images): Core77
The site of the deepest hole on Earth (well sort of, see Wikipedia article for clarification), the Kola Superdeep Borehole on the Kola Penninsula in Russia. Fascinating how completely empty and without fanfare the architecture is.
EDIT: as of January 2014, this is no longer the deepest hole. See this Wired article for info on two deeper holes, and a very nice sound installation created at one of them.
While looking for another book at the Architecture Library, I found this beautiful book of plates form 1847. I took some photographs, but found that a. my cell phone didn’t do a great job, and b. the New York Public Library did it much better than I ever could.
The book is Traite Theorique Et Pratique De L’Art De Beatir by Jean Rondelet. The book is about 12 x 24″ and absolutely beautiful.