"Baghdad - Dar El Salam" a Baghdad Travel Page by OMR

Capital of Iraq with 5 millions inhabitants, situated in the interior of the country on the river Tigris at the point where land transportation meets river transportation.
Baghdad is a real city, not just a large town, and its lights are still twinkling in the river at half past one in the morning. It is the river that 'makes' Baghdad. The Tigris, brown and swift, is the heart and soul of the City of the Caliphs.
For- one might as well declare it at once- Baghdad is not a city of stately majesty. It is not ornate and grand. It is, so to speak, a water color, not an oil painting. It is flat and dusty - indeed, from time to time it is enveloped in maddening storms that fling dust into your room, your car, food, eyes, ears, mouth. Baghdad has muted values.
It is an ancient city struggling awkwardly to be modern. If it lacks glamour, it has considerable charm. And if even the charm must be delved for, to me such delving seems worthwhile because, more than many cities, Baghdad reflects the most unusual, country that frames it. Iraq, after all, is the old, old Mesopotamia of Sumer, Babylon, Assyria, of the glorious sun-burst of the Abbasid Empire of Harun al Rashid, of Persian intrusions, and the affliction of four hundred dead years of Turkish rule. In other words, Baghdad is the still-beating heart of a former cradle of civilization, a country as historically dramatic as Ancient Greece or the Nile Valley.

Baghdad was the center of the Muslim world during the years while the Caliphate stayed in Baghdad, starting in the 760s (Baghdad was started being constructed in 763) running up to 1258.
It was destroyed by the advancing Mongols in 1258.
Baghdad was made capital of Iraq in 1921, from when it started to grow again.