Why is Paris called City of Lights?

Related questions

1. Why you should visit the Eiffel Tower?
2. What is Paris is famous for?
3. How long does the Eiffel Tower take?
4. Is there a secret room in the Eiffel Tower?
5. How much does the Eiffel Tower shrink?
6. What's on each level of the Eiffel Tower?
7. How long is the Eiffel Tower lit up at night?
8. Is there an apartment at the top of the Eiffel Tower?
9. Can you go up the Eiffel Tower at night?
10. How long does it take to walk the Eiffel Tower?

Tags

1. #literally
2. #light
3. #ville
4. #grand
5. #enlightenment
6. #first
7. #cities
8. #boulevards
9. #leading
10. #street
11. #european
12. #often
13. #monuments
14. #large
15. #lighting
16. #because
17. #during
18. #referred
19. #paris
20. #scale