Yesterday I came across this post,
10 Bizarre Things You Didn't Know You Could Buy Online, on the Oddee blog which features the world's biggest book. It's called
Bhutan: A Visual Odyssey Across the Last Himalayan Kingdom and is published by Friendly Planet.

This 112-page book measures 1.5m x 2.1m, weighs over 60kg, takes over 3 litres on of ink for printing and costs $2,000 to produce. Each copy is built expressly for the recipient, is numbered, and can include a personal dedication message. Profits from each sale goes to Friendly Planet. It is selling via
Amazon for just US$30,000.
Needless to say, you won't be finding
Bhutan: A Visual Odyssey Across the Last Himalayan Kingdom on any Blue Mountains City Library shelves.
However, just the day before, we'd catalogued the next best thing; Life-Sized Zoo by Teruyuki Komiya. (Inside subtitle: From tiny rodents to gigantic elephants, an actual-size animal encyclopedia).
This book measures 26cm x 37cm and costs a fraction of Bhutan: A Visual Odyssey Across the Last Himalayan Kingdom and is available for loan.
Each page has a different animal, pictured at life-size - some in double-spread, fold-out pages - and also gives information on the animal, including which part of the animal makes it into the picture, as you might imagine getting life-sized pictures of some animals is quite a challenge.

(Giraffe page - the apple is mine)
It's a beautiful and interesting book and I can't wait to take it home to my 8 year old.