Why is Paris called the city of lights and love?

Related questions

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3. What can you see from the Eiffel Tower?
4. Can you still go to the top of the Eiffel Tower?
5. What saved the Eiffel Tower?
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7. What's on each level of the Eiffel Tower?
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Tags

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2. #nickname
3. #ville
4. #first
5. #enlightenment
6. #adopt
7. #lighting
8. #really
9. #during
10. #cities
11. #paris
12. #lights
13. #european
14. #gained
15. #traction
16. #street