1: 1. The ancient city of Pompeii was buried under ash in 79 AD. 2. The Mayan calendar was incredibly accurate. 3. The Nazca Lines in Peru remain a mystery.

2: 4. The Great Sphinx of Giza is believed to have been built around 2500 BC. 5. The Indus Valley civilization had advanced plumbing systems. 6. The Library of Alexandria was a treasure trove of knowledge.

3: 7. The ancient city of Petra was carved into rose-red cliffs. 8. The Moai statues on Easter Island are thought to represent ancestors. 9. The Inca Empire built Machu Picchu without mortar.

4: 10. The Minoans on Crete had a complex writing system. 11. The Harappan civilization had streets laid out in a grid pattern. 12. The ancient Chinese civilization developed paper and printing.

5: 13. The Olmec civilization in Mesoamerica created colossal stone heads. 14. The Chaco Canyon culture built elaborate structures in New Mexico. 15. The ancient Egyptians believed in the afterlife and mummified their dead.

6: 16. The ancient Greeks held the first Olympic Games in 776 BC. 17. The Sumerians in Mesopotamia invented the wheel and writing. 18. The Norse civilization had intricate myths and sagas.

7: 19. The Mycenaean civilization in Greece was known for its warrior culture. 20. The ancient Persians built Persepolis as their ceremonial capital. 21. The Phoenicians were skilled sailors and traders.

8: 22. The Etruscans in Italy influenced Roman art and culture. 23. The Olmecs left behind carved stone monuments in Mexico. 24. The medieval city of Timbuktu was a center of learning.

9: 25. The lost city of Atlantis remains a mythical mystery. 26. The Anasazi civilization in the American Southwest built cliff dwellings. 27. The ancient Assyrians were known for their military prowess.

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