Why were ziggurats important to the Sumerians?

Ziggurats were important to the Sumerians as they served as religious temples dedicated to their gods, symbolizing the connection between the divine and the earthly realm. These massive structures not only represented the Sumerians' architectural and engineering prowess but also functioned as centers for worship, rituals, and community gatherings. Additionally, ziggurats often housed important administrative functions, reinforcing their significance in both spiritual and civic life.