This is a picture of a ziggurat, where gods were worshiped.
Sumerians expressed their religious beliefs by temples and religious towers, called ziggurats. It was the King's duty to build and maintain the ziggurats. The towers were made of mud bricks and located near temples. They were so large that they could be seen from 20 miles away. Some were as high as eight stories and as wide as 200 feet.
The Sumerians believed that the gods lived in the ziggurats, and they built special temples at the top for them. Outside the ziggurat, they attached a long staircase so the gods could climb down to earth. Kings and priests stood inside the towers to ask for the towers blessings.
Sumerian statues also expressed their religious beliefs. Many were detailed and lifelike. They showed people worshiping the gods, often with their eyes gazing upwards. The Sumerians believed that the gods were pleased when people showed them devotion, or love and obedience.
Sumerians had many kinds of religious ceremonies. Many times they would play music at ceremonies. Some ceremonies may have included human sacrifice.