Original: The Temple of Artemis ( , or Artemision ) , also known less precisely as Temple of Diana , was a Greek temple dedicated to a goddess Greeks identified as Artemis that was completed , in its most famous phase , around 550 BC at Ephesus ( in present-day Turkey ) .
Simplified: It was completed around 550 BC at Ephesus ( in present-day Turkey ) under the Achaemenid dynasty of the Persian Empire .