Well, a Ziggurat is basically a step pyramid

Quote Originally Posted by Wikipedia
Ziggurats (Akkadian (transliterated): ziqqurat, D-stem of zaqāru "to build on a raised area") were massive pyramidal temples built in the ancient Mesopotamian valley and western Iranian plateau, having the form of a terraced step pyramid of successively receding stories or levels. There are 32 ziggurats known at, and near, Mesopotamia. Twenty-eight of them are in Iraq, and four of them are in Iran.