Greek Mythology Notes
← Back to all myths

Pillars of Heracles

place
Ἡρακλέους Στῆλαι
Gateway between the known and unknown world

The Pillars of Heracles were the two promontories at the Strait of Gibraltar — the boundary between the known Mediterranean world and the terrifying, unknown Atlantic beyond.

The Myth

Heracles set up the two pillars during his tenth labour (the cattle of Geryon) to mark the western limit of the known world. One pillar was the Rock of Gibraltar; the other was identified with either Monte Hacho or Jebel Musa in Morocco. The inscription "Non Plus Ultra" (Nothing Further Beyond) warned that the world ended here. After Columbus, Spain's motto became "Plus Ultra" — there IS more beyond. The pillars appear on Spain's coat of arms and, through it, on the dollar sign ($).

Symbols

two rocksstraitlimit of worldAtlantic beyond

Fun Fact

The dollar sign ($) may derive from the Pillars of Heracles on the Spanish coat of arms — the ancient boundary of the world is on every American bill.

Explore Further

Explore More