At the heart of University College London, nestled in the centre of Bloomsbury, lies a room that had remained undisturbed for decades. When Professor James Cheshire stumbles upon it, he set about exploring its contents in the hope of saving them. For three years, he sifted through the countless dusty drawers and was stunned to discover some of the most significant maps and atlases from the last two centuries - many of which have not seen the light of day since they were created.

Maps...