180)[1] was a Greek traveler and geographer of the second century AD, who lived in the time of Roman emperors Hadrian, Antoninus Pius, and Marcus Aurelius. He is famous for his Description of Greece (Ancient Greek: Ἑλλάδος Περιήγησις, Hellados Periegesis),[2] a lengthy work that describes ancient Greece from his first-hand observations. This work provides crucial information for making links between classical literature and modern archaeology.