Ptolemy’s other major treatise is the Geography, arguably the first major Western cartographical compilation. Alongside his Geography, Ptolemy’s maps and geographical descriptions were used by ...

Claudius Ptolemy was a Greek mathematician ... Much of medieval astronomy and geography were built on his ideas: his world map, published as part of his treatise Geography in the 2nd century ...

At a time when knowledge of the world was fragmented and based on travelers’ and merchants’ accounts, one man set out to ...