What are the biggest cities in the world?

Just thought it would be interesting to look at what are the biggest cities in the world in terms of population. If you look at how things change, the way we live, and our growing world cities are the hub of so much life and energy.
Here they are from Wikipedia..
- Tokyo, Japan – 28 million
- Mexico City, Mexico – 18 million
- Mumbai, India – 18 million
- São Paulo, Brazil – 18 million
- New York City, USA – 17 million
- Shanghai, China – 14 million
- Lagos, Nigeria – 13 million
- Los Angeles, USA – 13 million
- Calcutta, India – 13 million
- Buenos Aires, Argentina – 12 million
- Seoul, South Korea – 12 million
- Beijing, China – 12 million
- Karachi, Pakistan – 11 million
- Delhi, India – 11 million
- Dhaka, Bangladesh – 11 million
- Manila, Philippines – 11 million
- Cairo, Egypt – 11 million
- Osaka, Japan – 11 million
- Rio de Janeiro, Brazil – 11 million
- Tianjin, China – 10 million
- Moscow, Russia – 10 million
Now compare this with the Denver population of 557,917 for the city or 2,359,994 for the Denver area. It is amazing to think of cities at this size and scale and the idea that Denver might at some day be this large. We have a number of New Yorkers here in Denver who love their home city, and with good reason. I can’t go for very long without a trip to the big apple myself. I also think that I would burn up if I lived there full time. It just seems that there is always something to do and not only doesn’t the city sleep… I didn’t either.

