The Battle of Thermopylae has remained a cultural icon of western civilization ever since it was fought. The battle is revisited in countless adages and works of popular culture, such as in films (e.g., The 300 Spartans (1962) and 300 (2007), based on the events during and close to the time of the battle), in literature, in song, in television programs, and in video games. The battle is also discussed in many articles and books on the theory and practice of warfare.

What's the best answer to this question: was the movie 300 based on real events?
yes