At first, progress in shipbuilding gave sailors more freedom. Mathematics and compasses encouraged them to set out on longer trips for destinations farther and farther away. Yet, ocean travel remained mysterious and terribly dangerous. Sailors had to rely on their knowledge and on the lore and wisdom of their forefathers. They also relied on handmade maps, crudely, but beautifully drawn. The selection of maps in this handsome book date from the 12th to 18th century, including the largest Vatican collection, compiled in one book. These maps are fascinating historical documents and a testimony to the bravery of all those who set out, not really know where on this earth that they were going.