The largest atlas is Earth Platinum, published by Millennium House (Australia) and measuring 1.854 m (6 ft 0.99 in) high, 1.45 m (4 ft 9.09 in) wide and 6 cm (2.36 in) thick. It was measured at the British Library in London, UK, on 12 July 2012. Source: www.guinnessworldrecords.com