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.

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.