The first city to reach a population of one million people was Rome, Italy. It reached that mark in 133 B.C. Today, there are more than 500 urban agglomerations with populations over a million.
Explore the world with Canadian freelance travel journalist Mark Stachiew.
The first city to reach a population of one million people was Rome, Italy. It reached that mark in 133 B.C. Today, there are more than 500 urban agglomerations with populations over a million.