Plataea (/pləˈtiːə/) or Plataeae (/pləˈtiːiː/; Ancient Greek: Πλάταια or Πλαταιαί) was an ancient city, located in Greece in southeastern Boeotia, south of Thebes. It was the location of the Battle of Plataea in 479 BC, in which an alliance of Greek city-states defeated the Persians.