If you look closely, there is no book more visual than Three Trapped Tigers, in that it is filled with blank pages, dark pages, it has stars made of words, the famous magical cube made of numbers, and there is even a page which is a mirror.
The spectacle of a great, solvent government paying a fictitious price for gold it did not want and did not need and doing it on purpose to debase the value of its own paper currency was one to astonish the world.