Another ancient city that seems more like fantasy, Babylon was quite a real place, too. A major city in ancient Mesopotamia, it was built along the River Euphrates in what is now Iraq. It was considered the holy city of the Akkadian Empire, and has the possible distinction of being the first ancient city with a population of over 200,000. It was originally founded in 2300 BCE, and would remain a notable place throughout history, known for its luxury, bright colors, and legendary Hanging Gardens. Perhaps ironically, the photo you see here of Babylon's ruins (behind the first row of palms) was taken from Saddam Hussein's summer palace.