Architecture

The architecture of ancient Egypt includes some of the most famous structures in the world: the Great Pyramids of Giza, Abu Simbel, and the temples at Thebes. All major building projects were organized and funded by the state, and they not only fulfilled religious, military, and commemorative purposes, but also reinforced the power and reputation of the pharaoh to ensure his legacy for all time. The ancient Egyptians were skilled builders with expert knowledge of basic surveying and construction techniques. Using simple but effective measuring ropes, plum bobs, and sighting instruments, architects could build large stone structures with accuracy and precision.
Most buildings in ancient Egypt, including the pharaoh's palace, were constructed from perishable materials such as mud bricks and wood and, for this reason, have not survived. Important structures such as temples and tombs were intended to last forever and were instead constructed of stone. The first large scale stone building in the world, the mortuary complex of Djoser, was built in the Third Dynasty as a stone imitation of the mud-brick and wooden structures used in daily life
Karnak temple's hypostyle halls are constructed with rows of thick columns supporting the roof beams.
The architectural elements used in Djoser's mortuary complex, including post and lintel construction of huge stone roof blocks supported by external walls and closely spaced columns, would be copied many times in Egyptian history. Decorative styles introduced in the Old Kingdom, such as the lotus and papyrus motifs, are a recurring theme in ancient Egyptian architecture
The earliest tomb architecture in ancient Egypt was the mastaba, a flat-roofed rectangular structure of mudbrick or stone built over an underground burial chamber. The mastaba was the most popular tomb among the nobility in the Old Kingdom, and the first pyramid, the step pyramid of Djoser, is actually a series of stone mastabas stacked on top of each other. The step pyramid was itself the inspiration for the first true pyramids. Pyramids were built by the pharaohs of the Old and Middle Kingdoms, but later rulers abandoned them in favor of less conspicuous rock-cut tombs. New Kingdom pharaohs built their rock-cut tombs in the Valley of the Kings, and by the Third Intermediate Period, the pharaohs had abandoned building grand tomb architecture altogether.
The earliest preserved ancient Egyptian temples, dating back to the Old Kingdom, consist of single, enclosed halls with roof slabs supported by columns. The mortuary temples connected to the pyramids at Giza are examples of this early temple. During the Fifth Dynasty, pharaohs developed the sun temple, the focus of which was a squat, pyramid-shaped obelisk known as a ben-ben stone. The ben-ben stone and other temple structures were surrounded by an outer wall and connected to the Nile via a causeway terminating in a valley temple. In the New Kingdom, architects added the pylon, the open courtyard, and the enclosed hypostyle hall to the front of the temple's sanctuary. Because the common people were not allowed past the entry pylon, the deity residing in the inner sanctuary was distanced from the outside world. This type of cult temple was standardly used until the Ptolemaic and Roman Periods.