Jeff Vandermeer has blogged about the large size of the Chamblin Bookmine, a used bookstore in Jacksonville, Florida. He created a video and posted photos of the enormous bookstore.
Ann and I have traveled the world and visited many a great bookstore, but none, not even the Strand, can compare to Chamblin's, in Jacksonville, Florida. "Bookmine" is an apt title because it's the only bookstore I've ever gotten lost in-it's that big. You could literally fit anywhere from four to eight other used bookstores inside of it. (David Moles, can I get a "Hallelujah!"?)
Jeff Vandermeer also provided some great narration for his video tour of the bookstore. Take a look: