Tokyo
The largest city in the world is Tokyo, Japan, with a total population of 37 million people.
Delhi
The National Capital Territory of Delhi. It is estimated that 50 percent of the population lives in sub-standard accommodation.
Shanghai
It has a population of around 29.8 million in its urban area, known for its modern skyline.
Mexico City
Mexico City's population is estimated at around 22.5 million, it's the capital and largest city of Mexico.
São Paulo
Population of over 22 million in its metropolitan area. It's the economic powerhouse of Brazil and Latin America.
Dhaka
Dhaka is known for its high population growth rate, with a population of around 23.9 million people.
Cairo
The capital of Egypt, it's the largest metropolitan area in Africa and the Middle East.