The famous map, "Typus Orbis Terrarum" (1570-), was created by Abraham Ortelius and published in his first Atlas. This map, which combined the most up-to-date knowledge available in the 16th century, had a significant cultural impact. Ortelius used a variety of sources, including Marco Polo's travel reports, Portuguese exploration knowledge, and information brought back by the Spanish, to accurately depict the world. Interestingly, Ortelius included sea monsters on his map for marketing purposes, as maps with these creatures were more popular at the time. One notable feature of this world map is the depiction of the North Pole as four islands separated by rivers. During Ortelius' time, there was a belief that there was a navigable passage to the Far East through the North Pole, leading to many failed attempts and loss of life.