World's 7 biggest mega-cities - number 1 is bigger than London, New York & Paris
- Posted on August 9, 2025
- By Express
- 3 Views
World's 7 biggest mega-cities - number 1 is bigger than London, New York & Paris
It's difficult to imagine the sheer size of the world's biggest mega-cities, with the largest one being home to nearly 40 million people.
