the Garden of Eden outside the world, rather than in its traditional place in the extreme east. The bottom right depicts Earth as a globe. It shows the North Pole and the South Pole, as well as the Equator and the two tropics. About 3000 inscriptions and detailed texts describe the various geographical features on the map, as well as related information about them. The depiction of inhabited places and mountains, the map's chorography, is also an important feature. Castles and cities are identified by pictorial glyphs representing turreted castles or walled towns, distinguished in order of their importance. The making of the map was a major undertaking and the map took several years to complete. The map was not created by Fra Mauro alone, but by a team of cartographers, artists, and copyists led by him and using some of the most expensive techniques available at the time. The price of the map would have been about an average copyist's annual salary. Editions and reproductions The studio of Fra Mauro produced two original editions of the map. In addition, at least one high-quality physical reproduction is made on the same material. One edition was commissioned by the Signoria of Venice—the supreme body of government of the Republic of Venice. This edition is still in existence. This map was "rediscovered" in the monastery of St. Michael in Murano, where Fra Mauro had his studio. It is normally on public display in the final room of the Sale Monumenti in Venice, in the Museo Correr. Another edition of the map was made for King Afonso V of Portugal. This edition was produced by Fra Mauro and his assistant Andrea Bianco, a sailor-cartographer. It was completed on 24 April 1459. The map was then sent to Lisbon in Portugal. Documents show that this map was housed in the royal palace of São Jorge Castle at least until 1494, but sometime after that, the map disappeared. In 1804, the British cartographer William Frazer made a full reproduction of the map on vellum. Although the reproduction is exact, minor differences are seen between the Venetian original and the British copy. The Frazer reproduction is currently on display in the British Library in London. In this article, some images are from the Venetian edition and some are from the Frazer reproduction. A number of historians of cartography, starting with Giacinto Placido Zurla (1806), have studied