Pick a map. Any map really. Chances are that the map is oriented with North at the top. But why is that? Maps are a visual language onto themselves, rich in iconography and symbols, and especially rich in mutually agreed conventions. So rich, in fact, that you will take many for granted without even realising it. In Why North is Up, cartographer Mick Ashworth leads the way through the history of cartographical conventions, introducing when and why they came into being, and how they have changed over time. And as a book published by the Bodleian Library, it is very attractively illustrated with a large number of maps from their – and other – collections.