Strange Maps: 'In 1569, Gerhard Mercator copied the Zeno map into his influential World Map. Abraham Ortelius did the same for his renowned map of the Northern Atlantic in 1573. In 1595, Mercator included Frisland (not to be confused with Friesland, which does exist on the North Sea coast of the Netherlands and Germany) in a separate inset on his 1595 map of the North Pole. Thus Frisland, and the other fanciful lands fabricated by the 16th century Zeno (most likely), came to be known as ‘fact’, and were copied by other cartographers, often with variations on the name such as Fixland, Freezeland or Frischlant. Only much later did it become clear they were imaginary.'