All population stats came from World Population Review's 2020 ... Although Rome has been slowly falling on Euromonitor's list ...

The city retained the top ranking in a list of the world’s top 50 cities with the largest concentration of millionaires.

Wunu Mountain City is only partly excavated. Guonei City, within the modern city of Ji’an, played the role of a ‘supporting capital’ after the main Koguryo capital moved to Pyongyang. Wandu Mountain ...