Maslen's map of the mythical inland sea of Australia. In the early 19th century, with the majority of the non-coastal areas of Australia still unexplored, the commonly held misconception was that central Australia must have an inland sea and major river system.
Map of the world by Fra Mauro, 1459 Spain, Portugal and Northern Africa. Fra Mauro was a 15th-century Venetian monk. In his youth, Mauro traveled as a merchant and a soldier. Although he was no longer free to travel, due to his religious status, he would consult with merchants of the city upon their return from voyages. By 1450 he composed a great mappamundi with surprising accuracy, including extensive written comments reflecting the geographic knowledge of his time.