My favorit big cities

1. Vancouver (Canada)


2. Chicago (USA)


3. Oslo (Norway)


4. London (UK)


5. Stockholm (Sweden)


6. San Diego (USA)


7. Oporto (Portugal)


8. New York (USA)


9. Berlin (Germany)


10. Halifax (Canada)


11. Wellington (New Zealand)


12. Quebec (Canada)


13. Istanbul (Turnkey)


14. Cairo (Egypt)


15. Barcelona (Spain)


16. Boston (USA)


17. Shanghai (China)


18. Denver (USA)


19. Lisbon (Portugal)


20. Amsterdam (could also be no 1)

 

Maybe even more difficult ....