Maps Unfolded – From Atlas to Street Map is about seven centuries of cartography in the Netherlands, including the very latest developments. The exhibition shows the enormous diversity of maps from the 15th century onwards and reveals the stories behind them. All maps, including works by Blaeu, Ortelius, Ptolemaeus and Bos, are held in the cartography collection at the Allard Pierson, one of the most important in Europe. Many of them are on loan from the Royal Dutch Geographical Society (KNAG), which marks its 150th anniversary in March.