Temples throughout 8000 BCE to 600 CE were mainly built for religion. Hammurabi was the creator of them but they only lasted as long as he did. The worship of one God or various gods or goddesses was a very important role. A temple dedicated to the special god was usually at the center of each urban area. Ziggurats were some of the many types of temples built during this time period in Mesopotamia. Pyramid temples were said to be able to connect to heaven and earth. Most temples were also made for polytheistic religions, or the worship of more than one God. They were constructed for religious reasons and it was made up of square or rectangular terraces of diminishing size, usually with a shrine made of blue enamel bricks on the top, it had a massive pyramidal step tower made of mud bricks and a terrace step pyramid of successfully repeating stories/levels.
A defensive wall is known as a fortification, which is usually used to defend a city from political aggression. These walls are generally referred to as city or town walls. Beyond their defensive utility many walls also had important symbolic functions; they represented the status and independence of the communities they embraced. Existing ancient walls are almost always masonry structures, although brick and timber-built variants are also known. Depending on the topography of the area surrounding the city or the settlement the wall is intended to protect, elements of the terrain, like coastlines or rivers, may be incorporated in order to make the wall more effective.
Sumer (Mesopotamia) is one of the world's oldest known walled cities. The Assyrians deployed large labor forces to build new palaces, temples and defensive walls. Some settlements in the Indus Valley Civilization were also fortified. By about 3500 B.C., hundreds of small farming villages dotted the Indus floodplain. Many of these settlements had fortifications and streets. The stone and mud brick houses were clustered behind massive stone flood dykes and defensive walls, for neighboring communities quarreled constantly about the control of prime agricultural land. Mundigak (c. 2500 B.C.) had defensive walls and square bastions of sun dried bricks.
Streets and Roads were built along with sewage systems back in 8000 BCE to 600 CE. Streets would normally run north south or east west and be paved with urban sanitation systems where water was obtained from wells by large groups or families.
Many large cities were connected by roads. Roads were a huge source of trading. One of the biggest trading roads was the Silk Road in ancient China to Europe. This road would trade silk for other goods and products. Not only products were exchanged throughout roads, but also cultural changes from distant travelers. Roads usually brought many societies together.
Most houses had a sewage and water system back in 8000 BCE to 600 CE. Rivers were there for irrigation or irrigation systems just as if it were used for farming and gave massive agricultural systems. Many ancient cities such as Jericho were near bodies of water and springs. Mesopotamia left traces of stone rainwater channels as well as wells, water pipes, and toilets. Water back then was ground water, but surprisingly did have a lot of sanitation. Most of the indoor plumbing in water systems did not come around until the times of the Ancient Rome however.