Largest Cities

This list of the world's largest cities is a trivia fan's treasure chest.

Consider these items:

• Cairo is larger than Los Angeles.
• Sao Paulo is larger than Mexico City.
• Istanbul is larger than Beijing.
• Chicago is larger than London.
• Baghdad is larger than Houston.

I know these can be jiggered depending on how many of the suburbs are considered but even with that there are some surprises.