The Great Sphinx of Giza ( Arabic: أبو الهول Abū al-Haul , English: The Terrifying One ; literally: Father of Dread), commonly referred to as the Sphinx of Giza or just the Sphinx , is a limestone statue of a reclining sphinx, a mythical creature with the body of a lion and the head of a human.  Facing directly from West to East, it stands on the Giza Plateau on the west bank of the Nile in Giza, Egypt. The face of the Sphinx is generally believed to represent the Pharaoh Khafre.
Cut from the bedrock, the original shape of the Sphinx has been restored with layers of blocks.  It measures 238 feet (73 m) long from paw to tail, 66.3 ft (20.21 m) high from the base to the top of the head and 62.6 feet (19 m) wide at its rear haunches.  It is the oldest known monumental sculpture in Egypt and is commonly believed to have been built by ancient Egyptians of the Old Kingdom during the reign of the Pharaoh Khafre ( c. 2558–2532 BC ). 
The Sphinx is a monolith carved into the bedrock of the plateau, which also served as the quarry for the pyramids and other monuments in the area.  The nummulitic limestone of the area consists of layers which offer differing resistance to erosion (mostly caused by wind and windblown sand), leading to the uneven degradation apparent in the Sphinx's body.   The lowest part of the body, including the legs, is solid rock.  The body of the lion up to its neck is fashioned from softer layers that have suffered considerable disintegration.  The layer in which the head was sculpted is much harder. 
Origin and identity
The Great Sphinx is one of the world's largest and oldest statues, but basic facts about it are still subject to debate, such as when it was built, by whom and for what purpose.
Names of the Sphinx
It is impossible to identify what name the creators called their statue, as the Great Sphinx does not appear in any known inscription of the Old Kingdom and there are no inscriptions anywhere describing its construction or its original purpose. In the New Kingdom, the Sphinx was called Hor -em- akhet (English: Horus of the Horizon ; Hellenized: Harmachis ), and the pharaoh Thutmose IV (1401–1391 or 1397–1388 BC) specifically referred to it as such in his " Dream Stele."
The commonly used name " Sphinx " was given to it in classical antiquity, about 2000 years after the commonly accepted date of its construction by reference to a Greek mythological beast with a lion's body, a woman's head and the wings of an eagle (although, like most Egyptian sphinxes, the Great Sphinx has a man's head and no wings).  The English word sphinx comes from the ancient Greek Σφίγξ ( transliterated: sphinx ) apparently from the verb σφίγγω ( transliterated: sphingo / English: to squeeze ), after the Greek sphinx who strangled anyone who failed to answer her riddle.
The name may alternatively be a linguistic corruption of the phonetically different ancient Egyptian word Ssp-anx (in Manuel de Codage). This name is given to royal statues of the Fourth dynasty of ancient Egypt (2575–2467 BC) and later in the New Kingdom ( c. 1570–1070 BC ) to the Great Sphinx more specifically.
Medieval Arab writers, including al-Maqrīzī, call the Sphinx balhib and bilhaw , which suggest a Coptic influence. The modern Egyptian Arabic name is أبو الهول ( Abū al Hūl , English: The Terrifying One ).
Builder and timeframe
Though there have been conflicting evidence and viewpoints over the years, the view held by modern Egyptology at large remains that the Great Sphinx was built in approximately 2500 BC for the pharaoh Khafra, the builder of the Second Pyramid at Giza. 
Selim Hassan, writing in 1949 on recent excavations of the Sphinx enclosure, summed up the problem:
Taking all things into consideration, it seems that we must give the credit of erecting this, the world's most wonderful statue, to Khafre, but always with this reservation: that there is not one single contemporary inscription which connects the Sphinx with Khafre; so, sound as it may appear, we must treat the evidence as circumstantial, until such time as a lucky turn of the spade of the excavator will reveal to the world a definite reference to the erection of the Sphinx.
The "circumstantial" evidence mentioned by Hassan includes the Sphinx's location in the context of the funerary complex surrounding the Second Pyramid, which is traditionally connected with Khafra.  Apart from the Causeway, the Pyramid and the Sphinx, the complex also includes the Sphinx Temple and Valley Temple, both of which display similar design of their inner courts. The Sphinx Temple was built using blocks cut from the Sphinx enclosure, while those of the Valley Temple were quarried from the plateau, some of the largest weighing upwards of 100 tons. 
A diorite statue of Khafre, which was discovered buried upside down along with other debris in the Valley Temple, is claimed as support for the Khafra theory.
The Dream Stele, erected much later by the pharaoh Thutmose IV (1401–1391 or 1397–1388 BC), associates the Sphinx with Khafra. When the stele was discovered, its lines of text were already damaged and incomplete, and only referred to Khaf , not Khafra. An extract was translated:
The Egyptologist Thomas Young, finding the Khaf hieroglyphs in a damaged cartouche used to surround a royal name, inserted the glyph ra to complete Khafra's name. When the Stele was re-excavated in 1925, the lines of text referring to Khaf flaked off and were destroyed.
Theories held by academic Egyptologists regarding the builder of the Sphinx and the date of its construction are not universally accepted, and various persons have proposed alternative hypotheses about both the builder and dating.
Some early Egyptologists and excavators of the Giza pyramid complex believed the Great Sphinx and associated temples to predate the fourth dynasty rule of Khufu, Khafre, and Menkaure. Petrie wrote in 1883 regarding the state of opinion regarding the age of the nearby temples, and by extension the Sphinx: "The date of the Granite Temple [Valley Temple] has been so positively asserted to be earlier than the fourth dynasty, that it may seem rash to dispute the point".
In 1857, Auguste Mariette, founder of the Egyptian Museum in Cairo, unearthed the much later Inventory Stela (estimated Dynasty XXVI, c. 678–525 BC), which tells how Khufu came upon the Sphinx, already buried in sand. Although certain tracts on the Stela are considered good evidence,  this passage is widely dismissed as Late Period historical revisionism, a purposeful fake, created by the local priests with the attempt to certify the contemporary Isis temple an ancient history it never had. Such an act became common when religious institutions such as temples, shrines and priest's domains were fighting for political attention and for financial and economic donations.
Gaston Maspero, the French Egyptologist and second director of the Egyptian Museum in Cairo, conducted a survey of the Sphinx in 1886. He concluded that because the Dream stela showed the cartouche of Khafre in line thirteen, it was he who was responsible for the excavation and therefore the Sphinx must predate Khafre and his predecessors—possibly Dynasty IV, c. 2575–2467 BC .  English Egyptologist E. A. Wallis Budge agreed that the Sphinx predated Khafre's reign, writing in The Gods of the Egyptians (1914): "This marvelous object [the Great Sphinx] was in existence in the days of Khafre, or Khephren, and it is probable that it is a very great deal older than his reign and that it dates from the end of the archaic period [ c. 2686 BC ]." Maspero believed the Sphinx to be "the most ancient monument in Egypt".
Modern dissenting hypotheses
Rainer Stadelmann, former director of the German Archaeological Institute in Cairo, examined the distinct iconography of the nemes (headdress) and of the Sphinx and concluded the style is more indicative of the Pharaoh Khufu (2589–2566 BC), builder of the Great Pyramid of Giza and Khafra's father. He supports this by suggesting Khafra's Causeway was built to conform to a pre-existing structure, which, he concludes, given its location, could only have been the Sphinx.
Colin Reader, an English geologist who independently conducted a more recent survey of the enclosure, agrees the various quarries on the site have been excavated around the Causeway. Because these quarries are known to have been used by Khufu, Reader concludes that the Causeway (and the temples on either end thereof) must predate Khufu, thereby casting doubt on the conventional Egyptian chronology.
Frank Domingo, a forensic scientist in the New York City Police Department and an expert forensic anthropologist,  used detailed measurements of the Sphinx, forensic drawings and computer imaging to conclude the face depicted on the Sphinx is not the same face as is depicted on a statue attributed to Khafra. 
In 2004, Vassil Dobrev of the Institut Français d'Archéologie Orientale in Cairo announced he had uncovered new evidence the Great Sphinx may have been the work of the little-known Pharaoh Djedefre (2528–2520 BC), Khafra's half brother and a son of Khufu.  Dobrev suggests Djedefre built the Sphinx in the image of his father Khufu, identifying him with the sun god Ra in order to restore respect for their dynasty. Dobrev also notes, like Stadelmann and others, the causeway connecting Khafre's pyramid to the temples was built around the Sphinx suggesting it was already in existence at the time.
Orion correlation theory
The Orion correlation theory, as expounded by popular authors Graham Hancock and Robert Bauval,  is based on the proposed exact correlation of the three pyramids at Giza with the three stars ζ Ori, ε Ori and δ Ori, the stars forming Orion's Belt, in the relative positions occupied by these stars in 10500 BC. The authors argue that the geographic relationship of the Sphinx, the Giza pyramids and the Nile directly corresponds with Leo, Orion and the Milky Way respectively. Sometimes cited as an example of pseudoarchaeology, the theory is at variance with mainstream scholarship.   
Water erosion hypothesis
The Sphinx water erosion hypothesis contends that the main type of weathering evident on the enclosure walls of the Great Sphinx could only have been caused by prolonged and extensive rainfall, and must therefore predate the time of the pharaoh Khafra. The hypothesis is championed primarily by Robert M. Schoch, a geologist and associate professor of natural science at the College of General Studies at Boston University, and John Anthony West, an author and alternative Egyptologist.
Colin Reader, a British geologist, studied the erosion patterns and noticed that they are found predominantly on the western enclosure wall and not on the Sphinx itself. He proposed the rainfall water runoff hypothesis, which also recognizes climate change transitions in the area.  
The Great Sphinx as Anubis
Author Robert K. G. Temple proposes that the Sphinx was originally a statue of the Jackal-Dog Anubis, the God of the Necropolis, and that its face was recarved in the likeness of a Middle Kingdom pharaoh, Amenemhet II. Temple bases his identification on the style of the eye make-up and style of the pleats on the headdress. 
Over the years several authors have commented on what they perceive as "Negroid" characteristics in the face of the Sphinx.  This issue has become part of the Ancient Egyptian race controversy, with respect to the ancient population as a whole.  The face of the Sphinx has been damaged over the millennia.
At some unknown time the Giza Necropolis was abandoned, and the Sphinx was eventually buried up to its shoulders in sand. The first documented attempt at an excavation dates to c. 1400 BC , when the young Thutmose IV (1401–1391 or 1397–1388 BC) gathered a team and, after much effort, managed to dig out the front paws, between which he placed a granite slab, known as the Dream Stele, inscribed with the following excerpt:
... the royal son, Thothmos, being arrived, while walking at midday and seating himself under the shadow of this mighty god, was overcome by slumber and slept at the very moment when Ra is at the summit [of heaven]. He found that the Majesty of this august god spoke to him with his own mouth, as a father speaks to his son, saying: Look upon me, contemplate me, O my son Thothmos; I am thy father, Harmakhis- Khopri - Ra - Tum ; I bestow upon thee the sovereignty over my domain, the supremacy over the living ... Behold my actual condition that thou mayest protect all my perfect limbs. The sand of the desert whereon I am laid has covered me. Save me, causing all that is in my heart to be executed. 
Later, Ramesses II the Great (1279–1213 BC) may have undertaken a second excavation.
Mark Lehner, an Egyptologist who has excavated and mapped the Giza plateau, originally asserted that there had been a far earlier renovation during the Old Kingdom (c. 2686–2184 BC),  although he has subsequently recanted this "heretical" viewpoint. 
In the beginning of the year 1887, the chest, the paws, the altar, and plateau were all made visible. Flights of steps were unearthed, and finally accurate measurements were taken of the great figures. The height from the lowest of the steps was found to be one hundred feet, and the space between the paws was found to be thirty-five feet long and ten feet wide. Here there was formerly an altar; and a stele of Thûtmosis IV was discovered, recording a dream in which he was ordered to clear away the sand that even then was gathering round the site of the Sphinx. 
The entire Sphinx was finally excavated in 1925 to 1936, in digs led by Émile Baraize.
In 1931 engineers of the Egyptian government repaired the head of the Sphinx. Part of its headdress had fallen off in 1926 due to erosion, which had also cut deeply into its neck.  This questionable repair was by the addition of a concrete collar between the headdress and the neck, creating an altered profie.  Many renovations to the stone base and raw rock body were done in the 1980s, and then redone in the 1990s. 
Missing nose and beard
The one-metre-wide nose on the face is missing. Examination of the Sphinx's face shows that long rods or chisels were hammered into the nose, one down from the bridge and one beneath the nostril, then used to pry the nose off towards the south. 
The Arab historian al-Maqrīzī, writing in the 15th century, attributes the loss of the nose to iconoclasm by Muhammad Sa'im al-Dahr—a Sufi Muslim from the khanqah of Sa'id al-Su'ada—in AD 1378, upon finding the local peasants making offerings to the Sphinx in the hope of increasing their harvest. Enraged, he destroyed the nose, and was later hanged for vandalism.  Al-Maqrīzī describes the Sphinx as the " talisman of the Nile" on which the locals believed the flood cycle depended. 
There is a story that the nose was broken off by a cannonball fired by Napoleon's soldiers. Other variants indict British troops, the Mamluks, and others. Sketches of the Sphinx by the Dane Frederic Louis Norden, made in 1738 and published in 1757, show the Sphinx missing its nose.  This predates Napoleon's birth in 1769.
In addition to the lost nose, a ceremonial pharaonic beard is thought to have been attached, although this may have been added in later periods after the original construction. Egyptologist Vassil Dobrev has suggested that had the beard been an original part of the Sphinx, it would have damaged the chin of the statue upon falling. The lack of visible damage supports his theory that the beard was a later addition.
Residues of red pigment are visible on areas of the Sphinx's face. Traces of yellow and blue pigment have been found elsewhere on the Sphinx, leading Mark Lehner to suggest that the monument "was once decked out in gaudy comic book colors". 
Colin Reader has proposed that the Sphinx was probably the focus of solar worship in the Early Dynastic Period, before the Giza Plateau became a necropolis in the Old Kingdom ( c. 2686–2134 BC ). He ties this in with his conclusions that the Sphinx, the Sphinx temple, the Causeway and the Khafra mortuary temple are all part of a complex which predates Dynasty IV ( c. 2613–2494 BC ). The lion has long been a symbol associated with the sun in ancient Near Eastern civilizations. Images depicting the Egyptian king in the form of a lion smiting his enemies date as far back as the Early Dynastic Period.
In the New Kingdom, the Sphinx became more specifically associated with the god Hor-em-akhet ( Hellenized: Harmachis ) or "Horus-at-the-Horizon", which represented the pharaoh in his role as the Shesep-ankh (English: Living Image ) of the god Atum. Pharaoh Amenhotep II (1427–1401 or 1397 BC) built a temple to the north east of the Sphinx nearly 1000 years after its construction, and dedicated it to the cult of Hor-em-akhet .
In the last 700 years, there has been a proliferation of travellers and reports from Lower Egypt, unlike Upper Egypt, which was seldom reported from prior to the mid-18th century. Alexandria, Rosetta, Damietta, Cairo and the Giza Pyramids are described repeatedly, but not necessarily comprehensively. Many accounts were published and widely read. These include those of George Sandys, André Thévet, Athanasius Kircher, Balthasar de Monconys, Jean de Thévenot, John Greaves, Johann Michael Vansleb, Benoît de Maillet, Cornelis de Bruijn, Paul Lucas, Richard Pococke, Frederic Louis Norden and others. But there is an even larger set of more anonymous people who wrote obscure and little-read works, sometimes only unpublished manuscripts in libraries or private collections, including Henry Castela, Hans Ludwig von Lichtenstein, Michael Heberer von Bretten, Wilhelm von Boldensele, Pierre Belon du Mans, Vincent Stochove, Christophe Harant, Gilles Fermanel, Robert Fauvel, Jean Palerne Foresien, Willian Lithgow, Joos van Ghistele, etc.
Over the centuries, writers and scholars have recorded their impressions and reactions upon seeing the Sphinx. The vast majority were concerned with a general description, often including a mixture of science, romance and mystique. A typical description of the Sphinx by tourists and leisure travelers throughout the 19th and 20th century was made by John Lawson Stoddard:
It is the antiquity of the Sphinx which thrills us as we look upon it, for in itself it has no charms. The desert's waves have risen to its breast, as if to wrap the monster in a winding-sheet of gold. The face and head have been mutilated by Moslem fanatics. The mouth, the beauty of whose lips was once admired, is now expressionless. Yet grand in its loneliness, – veiled in the mystery of unnamed ages, – the relic of Egyptian antiquity stands solemn and silent in the presence of the awful desert – symbol of eternity. Here it disputes with Time the empire of the past; forever gazing on and on into a future which will still be distant when we, like all who have preceded us and looked upon its face, have lived our little lives and disappeared. 
From the 16th century far into the 19th century, observers repeatedly noted that the Sphinx has the face, neck and breast of a woman. Examples included Johannes Helferich (1579), George Sandys (1615), Johann Michael Vansleb (1677), Benoît de Maillet (1735) and Elliot Warburton (1844).
Most early Western images were book illustrations in print form, elaborated by a professional engraver from either previous images available or some original drawing or sketch supplied by an author, and usually now lost. Seven years after visiting Giza, André Thévet ( Cosmographie de Levant , 1556) described the Sphinx as "the head of a colossus, caused to be made by Isis, daughter of Inachus, then so beloved of Jupiter". He, or his artist and engraver, pictured it as a curly-haired monster with a grassy dog collar. Athanasius Kircher (who never visited Egypt) depicted the Sphinx as a Roman statue, reflecting his ability to conceptualize ( Turris Babel , 1679). Johannes Helferich's (1579) Sphinx is a pinched-face, round-breasted woman with a straight haired wig; the only edge over Thevet is that the hair suggests the flaring lappets of the headdress. George Sandys stated that the Sphinx was a harlot ; Balthasar de Monconys interpreted the headdress as a kind of hairnet, while François de La Boullaye-Le Gouz's Sphinx had a rounded hairdo with bulky collar.
Richard Pococke's Sphinx was an adoption of Cornelis de Bruijn's drawing of 1698, featuring only minor changes, but is closer to the actual appearance of the Sphinx than anything previous. The print versions of Norden's careful drawings for his Voyage d'Egypte et de Nubie , 1755 are the first to clearly show that the nose was missing. However, from the time of the Napoleonic invasion of Egypt onwards, a number of accurate images were widely available in Europe, and copied by others.
Mystery of the Sphinx , narrated by Charlton Heston, a documentary presenting the theories of John Anthony West, was shown as an NBC Special on 10 November 1993 (winning an Emmy award for Best Research) A 95-minute DVD, Mystery of the Sphinx: Expanded Edition , was released in 2007. Age of the Sphinx , a BBC Two Timewatch documentary presenting the theories of John Anthony West and critical to both sides of the argument, was shown on 27 November 1994. In 2008, the film 10,000 BC showed a supposed original Sphinx with a lion's head. Before this film, this lion head theory had been published in documentary films about the origin of the Sphinx.
- Early Egyptologists were inconsistent in their transliteration of pharaonic names: Khafre and Khephren are both references to Khafra.