- These 15 ancient ruins existed before the fall of the Roman Empire in 476 AD
- Thracian burial mounds in Bulgaria number in the tens of thousands
- Explore the temple built to honor Confucius in his hometown of Qufu, China
- Before the Romans, the Etruscan civilization thrived in Italy from 750 to 90 BC
(CNN)Ancient sites open your mind to just how old "old" can be and how sophisticated our ancient ancestors were in devising their artistic, engineering and construction methods. You'll never equate "ancient" with "primitive" again.