Baghdad is the capital and largest city of Iraq, built on the banks of the Tigris River near the point where the Tigris and Euphrates systems draw closest together. Founded in the eighth century as the seat of the Abbasid caliphate, it grew within a few decades into one of the largest and most intellectually significant cities in the world, a status whose legacy still shapes how the city is understood today.

Where Is Baghdad Located?

Baghdad sits along the Tigris River, roughly midway down Iraq, at a site chosen for its access to both the Tigris and Euphrates river systems and to the main overland route toward the Iranian plateau. That position let grain from Al-Jazirah in the north and dates and rice from Basra in the south reach the city easily by water, making it a natural hub for trade as well as government.^[2]

A Brief History of Baghdad

Baghdad was founded in 762 CE by the Abbasid caliph al-Mansur, who built his new capital on the site of an older village of the same name. He gave it the formal name Madinat al-Salam, the “City of Peace,” though the older name Baghdad remained in everyday use and eventually prevailed. Earlier Abbasid rulers had governed from Kufa and nearby towns; al-Mansur chose this new site for its river access and strategic position.^[1][2]

Al-Mansur laid the city out as the Round City, a circular plan with four gates enclosing the caliph’s palace and the main mosque at its center. The Round City itself was reserved for government, while markets were relocated to the nearby Karkh suburb, and other districts grew up around it, including a quarter on the Tigris’s east bank built for the heir al-Mahdi.^[2]

The city reached its peak under Harun al-Rashid, who ruled from 786 to 809, by which time Baghdad may have held as many as 500,000 people. His successor, al-Ma’mun, who ruled from 813 to 833, turned Baghdad into a leading center for translating Greek science and philosophy into Arabic, founding the House of Wisdom with its library and observatory. Scholars there, including the translator Hunayn ibn Ishaq, produced Arabic versions of Greek texts that were later rendered into Latin in Spain in the twelfth century, work that went on to shape learning in medieval European universities. For roughly five centuries after its founding, Baghdad stood as the most significant cultural center of Arab and Islamic civilization.^[1][2]

Government and Modern Baghdad

Baghdad remains the capital and largest city of Iraq today, and one of the most populous urban centers in the Middle East. It is the seat of Iraq’s national government and its leading center of administration, services, and transportation, built around a historic core that still carries the street pattern and institutions of its earlier eras.^[1]

What Is Baghdad Known For?

Baghdad’s most visible modern landmark is the Martyr’s Monument, also known as Al-Shaheed Monument, completed in 1983 on the east bank of the Tigris near the Army Canal. It takes the form of a split turquoise dome roughly 50 meters (about 150 feet) tall, built to commemorate Iraqis killed in the Iran-Iraq War of 1980 to 1990. Its distinctive silhouette, visible across much of the city, has made it one of the most recognizable structures in modern Baghdad.^[3]

Historically, Baghdad is best known for its Abbasid-era Round City and, above all, for the House of Wisdom and the broader translation movement it anchored, which preserved and transmitted a large share of Greek scientific and philosophical learning to the later medieval world.^[2]

Why Baghdad Matters

Baghdad matters both as the continuous political center of Iraq since the modern state’s formation and as a historical reference point for the broader claim that the Islamic world, during the Abbasid era, played a central role in preserving and advancing science, mathematics, and philosophy at a time when much of that learning might otherwise have been lost to Europe. Its layered history, from the planned Round City of al-Mansur to the modern capital on the Tigris, is part of why the city continues to carry outsized symbolic weight in the region.

Key Takeaways

• Baghdad was founded in 762 CE by the Abbasid caliph al-Mansur as a new capital on the Tigris, originally named Madinat al-Salam.^[1][2]
• Its site was chosen for access to both the Tigris and Euphrates river systems and to trade routes toward the Iranian plateau.^[2]
• Under Harun al-Rashid and al-Ma’mun, Baghdad became the Islamic world’s leading center of learning, home to the House of Wisdom.^[1][2]
• The Martyr’s Monument, a split turquoise dome about 50 meters tall completed in 1983, is Baghdad’s most recognizable modern landmark.^[3]
• Baghdad remains Iraq’s capital and largest city today.^[1]

Sources

• Encyclopaedia Britannica | “Baghdad” | Undated | https://www.britannica.com/place/Baghdad | Accessed 2026-10-21
• Encyclopaedia Britannica | “Iraq: The Abbasid Caliphate” | Undated | https://www.britannica.com/place/Iraq/The-Abbasid-Caliphate | Accessed 2026-10-21
• Encyclopaedia Britannica | “Martyr’s Monument” | Undated | https://www.britannica.com/topic/Martyrs-Monument | Accessed 2026-10-21

Editorially reviewed by Specialty Digest Editorial TeamLast reviewed October 21, 2026Researched and drafted with AI assistanceReport an issue