I happened across this today and thought it was really interesting:

Largest Cities in the World

Where does your city rank?

Pusan is number 36, bigger than Los Angeles and bigger than Chicago. People still seem to think that I live in a little backwater village. Hopefully this proves them wrong .

Also notice Seoul is number one. That place is BUSY, which is why I moved to the south. It's way too crowded (and way too expensive) up there.

(By the way, this ranking is on population inside the city limits only. There are other rankings at the top of the page).