Final answer:
Ziggurats are pyramid-shaped structures found in Mesopotamia and were used for religious purposes.
Step-by-step explanation:
The name of the pyramid-shaped structures found in Mesopotamia is ziggurats. Ziggurats were massive structures that took the form of a terraced step pyramid with a shrine or temple at the summit. They were built by stacking and piling bricks, and they were used for religious purposes, with only authorized religious officials allowed inside.