Nabopolassar fought with an Assyrian-style army and took the throne of Babylon. Thirteen years later, Nineveh fell despite Egyptian help. Babylon took over much of the Assyrian empire. Later he defeated the last Assyrian king at Harran. His success was seen as Marduk’s revenge. Captured wealth from Assyrian royal cities allowed major building work at Babylon, which was continued by Nabopolassar’s son Nebuchadnezzar II. Neither king left statues of themselves, and cylinder seals represent gods by their symbols. Major subsidence in the citadel required frequent rebuilding on the Southern Palace. The names of temples and gates were compiled on to a clay tablet as a literary work. Colour-glazed bricks adorned the Processional Way leading to the temple of the New Year festival outside the citadel walls. That festival is described. Some of his creations Nebuchadnezzar described as a Wonder, but he made no mention of the Hanging Garden. In a separate part of the citadel, Nebuchadnezzar built a Summer Palace. His conquests included Tyre and Ashkelon but not Egypt or Lydia. He sacked the Temple in Jerusalem and deported its royal family to Babylon. Other captives settled on land nearby. Business archives of long duration continue into the Achaemenid period.

Darius I overcame rebellions and seized the throne of Babylon, but cuneiform scholarship continued and developed; religious practices did not change, nor did the great buildings on the citadel. The zodiac scheme came into use. The Achaemenid king took Babylonian royal titles and promoted the worship of Marduk for local purposes. Xerxes broke the continuity. Following an uprising, a purge led to the ending of many archives. The province of Babylon was divided in two. Subsequent Achaemenid kings continued to treat Babylon with reverence. Alexander the Great defeated Darius III, entered Babylon, retained the Persian satrap, and moved treasure from Susa and Ecbatana to Babylon. He was recognized as a god. Lack of sons at his premature death precipitated a civil war from which Alexander’s commander Seleucus emerged to take the throne jointly with his son Antiochus. The derelict ziggurat was demolished, but temples and rituals, chronicles and astronomical diaries, continued as before. Aramaic was widely used, and fewer texts were inscribed in cuneiform. Interest in the fall of Assyria and of the Babylonian empire is apparent in Greek literature. Famous scholars include Berossus and named astronomers. Parthians invaded and eventually ended the dynasty.

Early explorers and excavators knew only biblical and classical accounts, some of them garbled and confusing. They were unaware that Babylon had an advanced literate culture. Mud-brick ruins contrasted unfavourably with marble, and the sprawling site of Babylon had many separate mounds, with the Tower of Babel indistinguishable amid the rubble. As Babylon’s power grew, quarters of the citadel were named after more ancient cities, and branches of temples to deities in other cities became established there. Early travellers from the twelfth century onwards brought back to the west their accounts of what they saw. In the seventeenth century, cuneiform writing on stone was identified at Persepolis. In the seventeenth to nineteenth centuries, cuneiform inscriptions from Mesopotamia increasingly arrived in Europe and a few national museums were soon built to house the items discovered by travellers, dilettante collectors, and informal excavators. Decipherment then began to excite public interest, but literal understanding gave way only slowly to appreciation of symbolism and rhetoric. Official excavations in Babylon took place under German leadership between 1899 and 1917. A chronological sequence for the history still has a few unsolved problems. Cuneiform writing unexpectedly lasted into Roman times.