Link: Historical Myths: The 300 who held Thermopylae
Robert Wilde from About.com provides a clear summary of the story of the 300 Spartans whose sacrifice at Thermopylae still inspires us over 2,500 years later.
The eventual defeat of the Persian superpower by a backwater group of Greek states is seen by many historians as the start of modern Europe. That first battle with the invading Persians in the narrow pass at Thermopylae is by now as much myth as history. This article does a good job disentangling the history from the myth.