What's so special about Machu Picchu?

Related questions

1. Does anyone live at Machu Picchu?
2. What is the best time of year to visit Machu Picchu?
3. Can you still hike Machu Picchu?
4. Is Peru a cheap place to visit?
5. How old is Machu Picchu?
6. Why did Machu Picchu fall into decline?
7. Is Peru safe?
8. Why did Machu Picchu take so long?
9. How long is the Inca Trail in miles?
10. Is Peru a dangerous country?

Tags

1. #attracts
2. #protected
3. #empire
4. #heritage
5. #tourists
6. #cultural
7. #enormous
8. #which
9. #mysterious
10. #world
11. #sites
12. #natural
13. #attraction
14. #urban
15. #amazing
16. #creation
17. #important
18. #machu
19. #citadel
20. #considered
21. #researchers
22. #picchu
23. #nature