La Carta Pisana

This is one of the rare good pictures of La Carta Pisana available in the web.
http://www.capurromrc.it/mappe/!0143pisana.html
The so-called Carta Pisana is considered to be the oldest preserved nautical chart (a map that is made to serve as a sailing aid but it does not have to be used as such)... It is preserved at the Bibliotheque Nationale (Paris).... According to the toponyms (place-names) it is dated to the end of the 13th century. Even though it is called "Carta Pisana" it is widely believed that it was made in Genoa or by a Genoese mapmaker. It is called "Pisana" because it is linked to a Pisan patron.

For those interested in seeing old maps the above mentioned website's got lots of them.