Ptolemy’s ancient work was rediscovered, and new maps were drawn based on his thousand-year-old calculations. Indeed, Christopher Columbus’ voyage to America was partly due to Ptolemy—and errors in ...

<br>In 150 AD, the Greek scholar Claudius Ptolemy wrote a textbook entitled the <i>Geography, </i>which earned him the title ‘The Father of Geography’. Drawing on nearly a thousand years of classical ...

The ancient Greek astronomer and geographer Ptolemy of Alexandria drew a map of the world in the 2nd century, which shows the stone fort as one of only five Irish sites to be noted. The Grianan of ...