Answer:
Built in ancient Mesopotamia, a ziggurat is a type of massive stone structure resembling pyramids and featuring terraced levels. Accessible only by way of the stairways, it traditionally symbolizes a link between the gods and the human kind, although it also served practically as shelter from floods.
The ziggurat itself is the base on which the White Temple is set. Its purpose is to get the temple closer to the heavens, and provide access from the ground to it via steps. The Mesopotamians believed that these pyramid temples connected heaven and earth.