Pyramid

Source: Wikipedia, the free encyclopedia.
Pyramid of Khafre, Egypt, built c. 2600 BC

A pyramid (from

structure whose visible surfaces are triangular and converge to a point at the top, making the shape roughly a pyramid in the geometric sense. The base of a pyramid can be of any polygon shape, such as trilateral or quadrilateral
(a 2-dimensional shape is a triangle.)

A pyramid has the majority of its mass closer to the ground

Dashur Necropolis and then the Great Pyramid of Khufu, both in Egypt—the latter is the only extant example of the Seven Wonders of the Ancient World
.

Ancient monuments

West Asia

Mesopotamia

Anu ziggurat and White Temple at Uruk
Chogha Zanbil is an ancient Elamite complex in the Khuzestan province of Iran.

The Mesopotamians built the earliest pyramidal structures, called ziggurats. In ancient times, these were brightly painted in gold/bronze. They were constructed of sun-dried mud-brick, and little remains of them. Ziggurats were built by the Sumerians, Babylonians, Elamites, Akkadians, and Assyrians. Each ziggurat was part of a temple complex that included other buildings. The ziggurat's precursors were raised platforms that date from the Ubaid period[4] of the fourth millennium BC.

The earliest ziggurats began near the end of the

Early Dynastic Period.[5] The original pyramidal structure, the anu ziggurat, dates to around 4000 BC. The White Temple was built on top of it circa 3500 BC.[6]
Built in receding tiers upon a rectangular, oval, or square platform, the ziggurat was a pyramidal structure with a flat top. 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 colors and may have had astrological significance. Kings sometimes had their names engraved on them. The number of tiers ranged from two to seven. It is assumed that they had shrines at the top, but no archaeological evidence supports this and the only textual evidence is from Herodotus.[7] Access to the shrine would have been by a series of ramps on one side of the ziggurat or by a spiral ramp from base to summit.

Africa

Egypt

The pyramids of the Giza necropolis, as seen from the air

The most famous pyramids are in Egypt — huge structures built of bricks or stones, some of which are among the world's largest constructions. They are shaped in reference to the sun's rays. Most had a smoothed white limestone surface. Many of the facing stones have fallen or were removed and used for construction in Cairo.[8] The capstone was usually made of limestone, granite or basalt and some were plated with electrum.[9]

Ancient Egyptians built pyramids from 2700 BC until around 1700 BC. The first pyramid was erected during the

Giza in 2575–2150 BC.[12] The last king to build royal pyramids was Ahmose,[13] with later kings hiding their tombs in the hills, such as those in the Valley of the Kings in Luxor's West Bank.[14] In Medinat Habu and Deir el-Medina, smaller pyramids were built by individuals. Smaller pyramids with steeper sides were built by the Nubians who ruled Egypt in the Late Period.[15]

The Great Pyramid of Giza is the largest in Egypt and one of the largest in the world. At 146.6 metres (481 ft) it was the tallest structure in the world until the Lincoln Cathedral was finished in 1311 AD. Its base covers an area of around 53,000 square metres (570,000 sq ft). The Great Pyramid is the only extant one of the Seven Wonders of the Ancient World.

Ancient Egyptian pyramids were, in most cases, placed west of the river Nile because the divine pharaoh's soul was meant to join with the sun during its descent before continuing with the sun in its eternal round.[9] As of 2008, some 135 pyramids had been discovered in Egypt,[16][17] most located near Cairo.[18]

Sudan

Meroe with pylon
-like entrances
Nubian pyramids at archaeological sites of the Island of Meroe

While pyramids are commonly associated with Egypt, Sudan has 220 extant pyramids, the most in the world.[19] Nubian pyramids were constructed (roughly 240 of them) at three sites in Sudan to serve as tombs for the kings and queens of Napata and Meroë. The pyramids of Kush, also known as Nubian Pyramids, have different characteristics than those of Egypt. The Nubian pyramids had steeper sides than the Egyptian ones. Pyramids were built in Sudan as late as 200 AD.

Sahel