Sumeria's general ideology was that they existed solely to work for the gods as a tool for labor. They devoted their lives to their creators. Once succumbing to death, they believed everyone would spend the rest of eternity as ghosts in the Netherworld.
Within each city-state, temples called Ziggurats were believed to house that city's patron god. The Ziggurats were a large structure with ramps that provided access to the temple or shrine housed at the summit. Entering the Ziggurat