Giant atlas on show at British Library
13 July 2012 Last updated at 14:20 BST
A giant atlas has gone on show at the British Library.
The Earth Platinum reference atlas, one of only 32 copies in existence measures 6ft by 9ft and requires 6 people to carry it.
Each page has to be opened one at a time and to see the map at the end of the book would take around 40 minutes.
David Sillito has been to have a look.