Final answer:
A ziggurat served as a bridge for Divine Entities, connecting Mortals and Deities. The shrine at the top was for the god's use on earth.
Step-by-step explanation:
Physically, a ziggurat was a stepped brick tower with a small shrine at the top, related to the pyramid. A pyramid was a sunless labyrinthine tomb; a ziggurat was a sunbathed ladder for the Divine Entities; connecting Mortals and Deities. This symbolic architecture served as a bridge between the land of the living and the divine, with the ziggurat's shrine at the top intended for the use of the god when they descended to earth. In the context of Mesopotamian theocracy, seeing the ziggurat towering above the city, one made a visual connection to the god or goddess honored there, but also recognized that deity's political authority.