Temples often predated the creation of the urban settlement and grew from small one room structures to elaborate multiacre complexes across the 2,500 years of Sumerian history. Sumerian temples, fortifications, and palaces made use of more advanced materials and techniques, such as
buttresses,
recesses, and
half columns. Chronologically, Sumerian temples evolved from earlier
Ubaid temples. As the temple decayed it was ritually destroyed and a new temple built on its foundations. The successor temple was larger and more articulated than its predecessor temple. The evolution of the
E₂.abzu temple at
Eridu is a frequently cited case-study of this process. Many temples had inscriptions engraved into them, such as the one at
Tell Uqair. Palaces and city walls came much later after temples in the
Early Dynastic Period. . The form of a Sumerian temple is manifestation of Near Eastern
cosmology, which described the world as a disc of land which was surrounded by a salt water ocean, both of which floated on another sea of fresh water called
apsu, above them was a hemispherical firmament which regulated time. A world mountain formed an
axis mundi that joined all three layers. The role of the temple was to act as that axis mundi, a meeting place between gods and men. The sacredness of 'high places' as a meeting point between realms is a pre-Ubaid belief well attested in the Near East back the Neolithic age. The plan of the temple was rectangular with the corners pointing in cardinal directions to symbolize the four rivers which flow from the mountain to the four world regions. The orientation also serves a more practical purpose of using the temple roof as an observatory for Sumerian timekeeping. The temple was built on a low terrace of
rammed earth meant to represent the sacred mound of primordial land which emerged from the water called dukug, 'pure mound' (Sumerian: du₆-ku₃ Cuneiform:) during creation. The doors of the long axis were the entry point for the gods, and the doors of the short axis the entry point for men. This configuration was called the bent axis approach, as anyone entering would make a ninety degree turn to face the cult statue at the end of the central hall. The bent axis approach is an innovation from the Ubaid temples which had a linear axis approach, and is also a feature of Sumerian houses. An offering table was located in the centre of the temple at the intersection of the axes. Temples of the Uruk Period divided the temple rectangle into tripartite, T-shaped, or combined plans. The tripartite plan inherited from the Ubaid had a large central hall with two smaller flanking halls on either side. The entry was along the short axis and the shrine was at the end of the long axis. The T-shaped plan, also from the Ubaid period, was identical to the tripartite plan except for a hall at one end of the rectangle perpendicular to the main hall. Temple C from the Eanna district of
Uruk is a case-study of classical temple form. There was an explosion of diversity in temple design during the following Early Dynastic Period. The temples still retained features such as cardinal orientation, rectangular plans, and buttresses. Now however they took on a variety new configurations including courtyards, walls, basins, and barracks. The
Sin Temple in
Khafajah is typical of this era, as it was designed around a series of courtyards leading to a
cella. The high temple was a special type of temple that was home to the patron god of the city. Functionally, it served as a storage and distribution centre as well as housing the priesthood. The
White Temple of
Anu in
Uruk is typical of a high temple which was built very high on a platform of adobe-brick. In the Early Dynastic period high temples began to include a
ziggurat, a series of platforms creating a stepped pyramid. Such ziggurats may have been the inspiration for the Biblical
Tower of Babel.
Ziggurats house in
Ur, southern
Iraq , originally built by
Ur-Nammu,
Ziggurats were huge pyramidal temple towers which were first built in Sumerian City-States and then developed in Babylonia and Assyrian cities as well. There are 32 ziggurats known at, or near, Mesopotamia—28 in
Iraq and 4 in
Iran. Notable ziggurats include the
Great Ziggurat of Ur near
Nasiriyah, Iraq, the
Ziggurat of Aqar Quf near
Baghdad, Iraq,
Chogha Zanbil in
Khūzestān, Iran (the most recent to be discovered), and the
Sialk near
Kashan, Iran. Ziggurats were built by the
Sumerians,
Babylonians,
Elamites, and
Assyrians as monuments to local religions. The earliest examples of the ziggurat were raised platforms that date from the
Ubaid period during the fourth
millennium BC, and the latest date from the 6th century BC. The top of the ziggurat was flat, unlike many pyramids. The step pyramid style began near the end of the Early Dynastic Period. Built in receding tiers upon a rectangular, oval, or square platform, the ziggurat was a
pyramidal structure. Sun-baked bricks made up the core of the ziggurat with facings of fired bricks on the outside. The facings were often glazed in different colours and may have had
astrological significance. Kings sometimes had their names engraved on these glazed bricks. The number of tiers ranged from two to seven, with a shrine or temple at the summit. Access to the shrine was provided by a series of ramps on one side of the ziggurat or by a spiral ramp from base to summit. It has been suggested that ziggurats were built to resemble mountains, but there is little textual or archaeological evidence to support that hypothesis. Classical ziggurats emerged in the Neo-Sumerian Period with articulated buttresses, vitreous brick sheathing, and
entasis in the elevation. The Ziggurat of Ur is the best example of this style. Another change in temple design in this period was a straight as opposed to bent-axis approach to the temple. Ur-Nammu's ziggurat at Ur was designed as a three-stage construction, but today only two of these survive. This entire mudbrick core structure was originally given a facing of baked brick envelope set in
bitumen, 2.5 m on the first lowest stage, and 1.15 m on the second. Each of these baked bricks were stamped with the name of the king. The sloping walls of the stages were buttressed. The access to the top was by means of a triple monumental staircase, which all converges at a portal that opened on a landing between the first and second stages. The height of the first stage was about 11 m while the second stage rose some 5.7 m. Usually, a third stage is reconstructed by the excavator of the ziggurat (
Leonard Woolley), and crowned by a temple. At the
Chogha Zanbil ziggurat, archaeologists have found massive reed ropes that ran across the core of the ziggurat structure and tied together the mudbrick mass. The most notable architectural remains from early Mesopotamia are the temple complexes at
Uruk from the 4th millennium BC, temples and palaces from the
Early Dynastic period sites in the
Diyala River valley such as Khafajah and Tell Asmar, the
Third Dynasty of Ur remains at
Nippur (Sanctuary of
Enlil) and
Ur (Sanctuary of
Nanna), Middle
Bronze Age remains at Syrian-Turkish sites of
Ebla,
Mari,
Alalakh,
Aleppo and
Kultepe, Late Bronze Age palaces at
Hattusa,
Ugarit,
Ashur and
Nuzi, Iron Age palaces and temples at
Assyrian (
Kalhu/Nimrud,
Khorsabad,
Nineveh),
Babylonian (
Babylon),
Urartian (
Tushpa/Van,
Haykaberd,
Ayanis,
Armavir,
Erebuni,
Bastam) and
Neo-Hittite sites (
Karkamis,
Tell Halaf,
Karatepe). Houses are mostly known from Old Babylonian remains at Nippur and Ur. Among the textual sources on building construction and associated rituals are Gudea's cylinders from the late 3rd millennium are notable, as well as the Assyrian and Babylonian royal inscriptions from the
Iron Age. in his royal chariot, tramping a dead or dying enemy, part of a war scene from
Dur-Sharrukin.
Iraq Museum ==Landscape architecture==