Gerardus Mercator: the cartographer who shaped our worldview (1512-1594) This story is dedicated to Gerardus Mercator (1512-1594), for many – including the author of this book – the greatest cartographer of all time. His life, education and work are described. He lived in a time and region where poverty and political-religious tensions prevailed: the south-east of the Low Countries in the 16th century. Mercator’s life therefore had many setbacks, including his imprisonment and the loss of 3 of his 5 children. Nevertheless, he became proficient in all facets of map making: geographical knowledge, surveying techniques and map design and engraving. He produced both large-scale and small-scale maps, world maps and atlases. In addition, he made (earth) globes and surveying instruments. His life, studies and work are described chronologically. His predecessors are also discussed: in particular, the geographers from classical antiquity who inspired him during his studies and work. His two greatest achievements receive special attention: his world map from 1569 with a projection named after him for navigation purposes and the “first” structured collection of maps in book form from 1585, for which he coined the term Atlas. Numerous renowned cartographers have subsequently elaborated on Mercator’s map projection and atlas. Even today, his projection is still used. He has thus shaped the worldview of countless people…