1. New York City, New York, United States
2. London, England, United Kingdom
3. Tokyo-Osaka, Japan
4. Los Angeles–San Francisco Bay-Silicon Valley, California, United States
5. Paris, France
6. Hong Kong-Pearl River Delta, China
7. Chicago, Illinois, United States
8. Moscow, Russia
9. Shanghai, China
10. Washington, DC, United States
11. Frankfurt, Germany
12. Beijing, China
13. Toronto, Ontario, Canada
14. Rome, Italy
15. Seoul, South Korea
16. Rio de Janeiro, Brazil
17. Saint Petersburg, Russia
18. Mumbai, India
19. Mexico City, Mexico
20. Istanbul, Turkey
21. Singapore
22. Sydney, Australia
23. Cairo, Egypt
24. Jerusalem, Israel
25. Delhi, India