There is no architecture quite like the Parthenon. During its heyday, the Parthenon played a key role in Athenian life, as temple, artistic masterpiece, and national symbol, but in time the monument’s importance surpassed the narrow borders of its country and the world of architecture. The Parthenon became the symbol of antiquity and the “golden age of Athens” where democracy was born. However, despite being one of the planet’s greatest and most viewed cultural monuments–attracting millions of tourists every year from all over the world–not many know its secrets. So sit back, relax, because you are about to learn about a truly marvel of antiquity. These are 25 Impressive Facts About the Parthenon.