Natufian culture Nevali Cori in Turkey, ca. 8,000 BC Çatalhöyük in Turkey, 7,500 BC Mehrgarh in Pakistan, 7,000 BC Herxheim (archaeological site) in Germany, 5,300 BC Knap of Howar and Skara Brae, the Orkney Islands, Scotland, from 3,500 BC over 3,000 settlements of the Cucuteni-Trypillian culture, some with populations up to 15,000 residents, flourished in present-day Romania, Moldova and Ukraine from 5,400 to 2,800 BC. Antiquity Mesopotamian Mesopotamia is most noted for its construction of mud-brick buildings and the construction of ziggurats, occupying a prominent place in each city and consisting of an artificial mound, often rising in huge steps, surmounted by a temple. The mound was no doubt to elevate the temple to a commanding position in what was otherwise a flat river valley. The great city of Uruk had a number of religious precincts, containing many temples larger and more ambitious than any buildings previously known. The word ziggurat is an anglicized form of the Akkadian word ziqqurratum, the name given to the solid stepped towers of mud brick. It derives from the verb zaqaru, ("to be high"). The buildings are described as being like mountains linking Earth and heaven. The Ziggurat of Ur, excavated by Leonard Woolley, is 64 by 46 meters at base and originally some 12 meters in height with three stories. It was built under Ur-Nammu (circa 2100 B.C.) and rebuilt under Nabonidus (555–539 B.C.), when it was increased in height to probably seven stories. Ancient Egyptian Modern imaginings of ancient Egypt are heavily influenced by the surviving traces of monumental architecture. Many formal styles and motifs were established at the dawn of the pharaonic state, around 3100 BC. The most iconic Ancient Egyptian buildings are the pyramids, built during the Old and Middle Kingdoms (2600–1800 BC) as tombs for the pharaoh. However, there are also impressive temples, like the Karnak Temple Complex. The Ancient Egyptians believed in the afterlife. They also believed that in order for their soul (known as ka) to live eternally in their afterlife, their bodies would have to remain intact for eternity. So, they had to create a way to protect the deceased from damage and grave robbers. This way, the mastaba was born. These were adobe structures with flat roofs, which had underground rooms for the coffin, about 30 m down. Imhotep, an ancient Egyptian priest and architect, had to design a tomb for the Pharaoh Djoser. For