A new exhibition opened at the British Library this weekend: Secret Maps.

Maps have always been more than just tools for navigation – in the hand of governments, groups and individuals, maps create and control knowledge. In Secret Maps, we trace the levels of power, coercion and secrecy that lie behind maps from the 14th century to the present day, and uncover the invisible forces that draw and distort the world around us.

Some of the maps on display reveal hidden landscapes, offering insight into places long forgotten or erased from official histories. Others are purposefully deceptive, designed to protect treasures, mask strategic locations, or reshape the way we see the world. This exhibition uncovers each of their individual secrets, revealing their hidden purposes and power.

The exhibition runs until 18 January 2016. Tickets cost £20. There are also a number of talks, tours, workshops and other events affiliated with the exhibition; they’re listed at the bottom of the exhibition’s web page.