Top Cities in World:
| Rank | City | Country |
|---|---|---|
| 1 | Tokyo | Japan |
| 2 | Delhi | India |
| 3 | Shanghai | China |
| 4 | Dhaka | Bangladesh |
| 5 | Sao Paulo | Brazil |
| 6 | Mexico City | Mexico |
| 7 | Cairo | Egypt |
| 8 | Beijing | China |
| 9 | Mumbai | India |
| 10 | Osaka | Japan |
| 11 | Karachi | Pakistan |
| 12 | Chongqing | China |
| 13 | Istanbul | Turkey |
| 14 | Kinshasa | Democratic Republic of the Congo |
| 15 | Lagos | Nigeria |
| 16 | Jakarta | Indonesia |
| 17 | Buenos Aires | Argentina |
| 18 | Kolkata | India |
| 19 | Moscow | Russia |
| 20 | Rome | Italy |