What skill did the Babylon have?

Answer 1

Ziggurats were huge "stepped" structures with, on their summit, far above the ground, a temple. This Temple would have been to the city god. The city ziggurat would easily be the most conspicuous building in the city, towering above any visitors coming to their city. Therefore the ziggurat was not just a religious center but also a center of civic pride. Any visitor could not but see the ziggurat. The ziggurats were built on an immense scale: in the time of Hammurapi they would sometimes reach the height of 150 feet. Around the base there might be more temples or in some case accommodation for priests. Some of the earliest proper ziggurats were built by Ur-Nammu (2112-2095), a late Sumerian king of Ur. These were with three "steps" but later Ziggurats had as many as seven "steps".

Similar structures to ziggurats have been discovered at the other side of the world, in Central America. The Aztecs and other people inhabiting the area built huge "stepped" structures for worshipping their gods. These however were some 3000 years after the early Mesopotamian ziggurats.