Mesopotamia is located in the Tigris-Euphrates valley; The first cities to exist were established by the Sumerian people around 4,000-3,000 BCE. Mesopotamian cities emerged as a result of population growth as well as the discovery of fertile land with a sufficient water source. Each city was said to have its own local god that its inhabitants worshiped according to cuneiform tablets from the third millennium BCE. Because each local god was believed to have a specific city, the city was also called "temple cities" because a temple dedicated to the god was built in the center of the city. These temples were called Ziggurats. Ziggurats were built in the same way as the pyramids of ancient Egypt, but they had different features such as a stepped structure. These unique structures were built because they were considered a link between heaven and earth allowing humans to ritually ascend into the presence of God. The second difference between Mesopotamian temples and Egyptian temples is the location where they were built. The Mesopotamians placed their temple in the center of the city where, as