Where Babylon was and why it mattered
Babylon stood on the Euphrates in central Iraq, not far from the modern town of Hillah and roughly 85 kilometres south of Baghdad. Its name in Akkadian, Bab-ili, is usually translated “gate of the god”. The city was never the oldest or the largest in Mesopotamia, and for much of its history it was not even the most powerful. Its lasting importance came from something else: it became the religious and cultural centre that rulers of very different backgrounds wanted to control or be crowned in.
The site is a large field of mounds. Much of the ancient city lies below the water table, so the earliest levels have been reached only in limited places, and our picture of its first centuries comes mostly from written sources rather than from excavation.
A small town becomes a kingdom
Babylon appears in written sources in the later third millennium BCE as a modest town. Its rise began in the early second millennium BCE, when a dynasty of Amorite rulers made it their seat. The Amorites were Semitic-speaking groups who had settled across Mesopotamia and Syria, and the Amorite dynasty at Babylon was one of several competing for power after the collapse of the Third Dynasty of Ur.
Its sixth king, Hammurabi, reigned for about four decades in the 1700s BCE (the exact dates depend on which chronology is used; 1792 to 1750 BCE is a common convention). He defeated rivals such as Larsa and Mari and brought much of southern and central Mesopotamia under one crown. He is best known today for the laws of Hammurabi, inscribed on a stele that was carried off to Susa and found there in 1901 to 1902. His successors kept the core of the kingdom for a few generations, but outlying regions slipped away.
Hittites, Kassites and Elamites
Babylon’s first dynasty ended around 1595 BCE (again in the commonly used middle chronology), when a Hittite army under Mursili I raided the city and then withdrew. Control passed to the Kassites, a people from outside the traditional Mesopotamian heartland, whose Kassite dynasty ruled Babylonia for roughly four centuries. They adopted local language and religion, kept cuneiform scribal practice alive, and made Babylonian a language of diplomacy. Letters from this period show Babylonian kings corresponding with Egyptian pharaohs as equals.
The Kassite period ended in the twelfth century BCE after attacks from Elam, whose armies carried off monuments and, according to later tradition, the statue of the god Marduk. A later king, Nebuchadnezzar I, is credited in Babylonian tradition with bringing the statue back. This story shows how central the city’s god had become to its identity.
Under Assyrian pressure
For several centuries Babylon was overshadowed by the Assyrian Empire to the north. Assyrian kings respected Babylon’s temples and often claimed its kingship for themselves, but relations were difficult. In 689 BCE Sennacherib, after years of conflict, captured Babylon and destroyed much of it. His son Esarhaddon began rebuilding, and a later civil war between Esarhaddon’s sons ended with another Assyrian siege of the city in the 640s BCE. These events show that Babylon was prized and feared at the same time, rather than simply a subject city.
The Neo-Babylonian peak
In 626 BCE a Babylonian leader named Nabopolassar took the throne and, with allies, helped bring down Assyria; Nineveh fell in 612 BCE. His son Nebuchadnezzar II (reigned about 605 to 562 BCE) turned Babylon into an imperial capital. He campaigned in Syria and the Levant, took Jerusalem in 597 BCE, and, after a later revolt, destroyed it in 586 BCE. At home he rebuilt on a large scale: palaces, temples, canals, a double circuit of walls and the ceremonial route leading to the Ishtar Gate. Much of what visitors and excavators associate with Babylon dates to his reign.
The last native king, Nabonidus (reigned 556 to 539 BCE), spent years away at the oasis of Tayma in Arabia and promoted the moon god Sin, which his critics, including the priests of Marduk, resented. How much of that criticism is fair is debated, since many of our sources were written by his opponents.
Persians, Alexander and the Seleucids
In 539 BCE Cyrus the Great of Persia defeated Nabonidus’s army and entered Babylon. Sources from the time, including the Babylonian Chronicle and the Cyrus Cylinder, describe a largely peaceful entry, though they are shaped by Persian and Babylonian priestly interests. The fall of Babylon therefore meant a change of ruler rather than the end of the city. Under Achaemenid kings it stayed a major administrative centre, although revolts against Persian rule occurred in the early years of Darius I and later under Xerxes, and were suppressed.
Alexander the Great entered the city in 331 BCE after defeating Darius III at Gaugamela, and he made it a base for his planned campaigns. He died there in June 323 BCE. After his death the Seleucid dynasty took control of the region and, around 300 BCE, founded a new capital, Seleucia on the Tigris. As population and royal attention shifted, Babylon declined gradually.
Slow fade and rediscovery
Babylon did not vanish overnight. Temple life and scholarship continued for generations, and the latest dated astronomical tablets known from the city belong to the later first century CE. Over the following centuries the site became ruins and a quarry for brick. The Babylonian astronomy preserved on those tablets is one of the city’s most lasting contributions.
The Bible and Greek writers kept the name alive, and European travellers searched for the site from the early modern period. Systematic excavation began with Robert Koldewey’s German expedition (1899 to 1917), and later work, including Iraqi projects, has continued. Babylon was inscribed on the UNESCO World Heritage List in 2019, though the site still faces problems from past restoration work, modern construction and conservation needs.
What remains uncertain
Much of Babylon’s history rests on foreign accounts and on royal inscriptions that were written to praise the king. Exact dates for the earlier periods vary by chronology, the location and even the existence of the Hanging Gardens are debated, and the lower levels of the site have been excavated only in small areas. What is clear is that Babylon outlasted several conquerors because each new ruler found it more useful to preserve its prestige than to erase it.