
Landmark 02 / 10
The Ishtar Gate
Engineering story
Material science: the glazed brick
Why it matters
The lesson is not the lion as symbol but the glazed brick: cobalt and copper oxides are ground and mixed into the clay in tested proportions, then the brick is fired between 950 and 1,050 °C. The even blue across thousands of bricks shows exact quality control, and the animals are modelled as part of the wall itself, not decoration applied to it.
In the documentary series12. Neo-Babylonian PeriodThe greatest city of the ancient world