Artemisium

Artemisium or Artemision (Greek: Ἀρτεμίσιον) is a cape in northern Euboea, Greece. The legendary hollow cast bronze statue of Zeus, or possibly Poseidon, known as the Artemision Bronze, was found off this cape in a sunken ship, as was the Jockey of Artemision, a bronze statue of a racehorse and its jockey.
The Battle of Artemisium, a series of naval engagements over three days during the second Persian invasion of Greece in 480 BC, simultaneously with the more famous land battle at Battle of Thermopylae, took place here.
The filme was loosely based on this historic battle. 