The Great Pyramid of Giza: Everything About the Pyramid of Khufu

The first thing you need to know before standing in front of it: You are not seeing the structure itself, but its core.

Khufu Pyramid (without hyphen) or Pyramid of Khufu (with hyphen): Both spellings are common and refer to the same structure. Originally, it was smooth. A continuous skin of fine, almost white limestone covered all four sides, polished, with no visible steps, and a capstone sat at the apex. What is visible today is the masonry beneath: roughly two hundred layers of rough blocks that were never intended for foreign eyes. The famous stepped appearance is a result of damage.

The height has also changed. When completed, the structure stood 146.6 meters high. Today, it is approximately 138.8 meters because the topmost layers, including the tip, are missing. If you see a small platform at the top, you are looking at a gap where material is missing.

Nevertheless, the Pyramid of Khufu at Giza is the only one of the seven ancient wonders of the world that still stands. The other six have vanished, burned down, collapsed, or been dismantled, and in several cases, even their original locations are uncertain. This single structure outlasted them all and remained the tallest man-made structure in the world for around 3,800 years, until Gothic church towers surpassed it.

What often gets lost in the discussion: This is not an object of mystery, but rather one of the best-documented structures in human history. The patron, purpose, materials, origin of the stone, organization of labor, and approximate construction time are known and supported by archaeological evidence. Only detailed questions remain open, and ironically, these are precisely the details that are most complex.

One clarification upfront, as it regularly causes confusion on-site: Of the three pyramids on the plateau, this is the largest, but it often appears smaller than its neighbor in many photographs. There are two reasons for this. The middle pyramid sits on higher ground, and it has retained its tip along with some remnants of its casing. Measured by base area, height, and volume, however, the Pyramid of Khufu clearly leads, not just among the Giza pyramids, but ahead of any other pyramid ever built.

This page provides an overview of the structure as a whole. For individual chambers, newly discovered cavities, and construction methods, there are separate pages linked at the appropriate places.

Khufu or Cheops: Who Was the Patron?

The patron was not named Cheops. His name was Khufu.

Cheops is the Greek rendering of the Egyptian name, recorded by Herodotus and subsequently adopted into all European languages. In German, the Greek form has become standard, whereas academic literature frequently uses the Egyptian version. So, if you encounter references to the Pyramid of Khufu, it refers to the same structure.

The structure itself also had a name, which is revealing. It was called *Achet-Khufu*, translated roughly as "Horizon of Khufu." In Egyptian thought, the horizon is the place where the sun transitions between worlds. Thus, the structure was not a tomb in the sense of a monument, but a machine for transition: the place where a king changes sides.

Remarkably little is known about the man Khufu. He reigned during the Fourth Dynasty; the Turin King List gives him 23 years, while other sources suggest more. Herodotus described him two thousand years later as a tyrant who closed temples, but there is no Egyptian evidence for this, and the narrative bears all the hallmarks of a late legend.

Most striking is the scarcity of depictions. From the king who commissioned the largest stone building on earth, only one fully preserved round sculpture exists: an ivory figurine standing 7.5 centimeters tall. Flinders Petrie found it in 1903 in Abydos, in two pieces. First, the body was uncovered; the head appeared three weeks later after Petrie systematically sifted the excavation debris. Wherever it is displayed, check its location before visiting a museum: With the opening of the Grand Egyptian Museum, numerous objects have changed venues.

That this structure can be attributed to him at all owes itself to a casual finding. In the relieving chambers above the King's Chamber—rooms that were never meant to be entered—markings painted in red appear on the walls. These bear the names of work gangs, and within those gang names lies the king's name. They are work notes, not dedicatory inscriptions, and precisely that makes them reliable: No one would have bothered to forge something in an invisible location.

A structure of six million tons and a portrait that fits in one hand: This disparity says more about the state of transmission from the Old Kingdom than any number ever could.

The Dimensions of the Great Pyramid of Khufu

The exterior is the part where the precision of the construction is most evident, and the numbers are the primary reason this structure has been measured for two centuries.

The base is a nearly perfect square with a side length of approximately 230.3 meters. The four sides differ by only a few centimeters, amounting to fractions of a per mille. The corners are nearly right-angled. And the entire structure is not placed arbitrarily in the landscape but is aligned to true north, with a deviation in the range of arcminutes. This is more precise than what could be achieved with a handheld compass.

The slope angle of the faces is 51 degrees 50 minutes. Expressed not as an angle but as a ratio of horizontal offset to vertical rise, this system yields a clean value. The Great Pyramid of Khufu was thus not a random product but a calculated design that could be checked against each individual block using a simple set square.

A peculiarity is visible only from the air and only when the sun is low: The four faces are not perfectly flat but curve slightly inward toward the center. Each side technically consists of two very shallowly sloped halves. Whether this was intentional, a consequence of construction processes, or a settlement effect remains unresolved. It has been visible in photographs since the 1940s.

Remnants of the original white outer skin survive, and they stand in the best spot: at the bottom of the north side, where the current entrance is located. A few dozen blocks in their original positions, with joints barely visible. Standing there, you can see on two square meters how the entire structure once looked.

Two details contextualize the oft-cited number of blocks. First, the foundation is not a level surface but was incorporated into the construction: At the lowest level lies a natural rock core that was never removed. Its size cannot be determined from the outside, which means all block counts remain estimates. Second, the surrounding area still had to be leveled, and this was achieved with an accuracy of a few centimeters across the entire base area of more than five hectares.

The tip has been missing for a long time. Whether a gilded capstone ever sat there, as documented for later pyramids, cannot be confirmed. It has never been found.

The Entrance Is a Breach Hole

The interior is the biggest surprise for most visitors, in both directions.

First, the access. You do not enter through the original entrance but through a hole someone smashed into the structure. In the 9th century AD, Caliph al-Mamun had a shaft driven into the north face in search of treasure. He hit the existing corridor system, and this breach shaft is still the way in today. The original entrance lies several meters higher and significantly further east, and it was originally hidden behind the casing stones.

That the shaft led to its target was partly luck, partly calculation. The ascending passage had been sealed after the burial with several ton-weight granite blocks lowered from above, which jammed tightly. This barrier cannot be opened, only bypassed. Al-Mamun's men drove their shaft sideways past the closure, through the softer limestone, and hit the passage above the blocks. Anyone entering today sees the closure stones from the other side as they pass.

What Is Visible Inside – and What Is Not

Inside, the path leads over three levels. A descending passage cuts deep into the bedrock beneath the structure and ends in an unfinished chamber. An ascending passage, only about one meter high and nearly forty meters long, leads upward. There, the space suddenly widens into the Grand Gallery, a shaft nearly nine meters high and almost forty-seven meters long, with a corbelled ceiling. At the end lies the King's Chamber, fully lined with granite, containing a single lidless sarcophagus.

And now for the second surprise: There are no images. No wall paintings, no reliefs, no inscriptions, no offerings. The rooms are bare. If you imagine the colorful burial chambers from documentaries about the Valley of the Kings, you will find yourself facing smooth stone here. This is not a loss due to looting, but the condition of the Old Kingdom: The decoration of royal burial chambers did not begin until centuries later.

One detail deserves mention nonetheless, as it has occupied discussion for decades. Two narrow shafts lead diagonally outward from the King's Chamber and reach the surface. From the lower second chamber, two similar shafts also lead away, but they end in the masonry behind small stone plates with metal fittings. Since the 1990s, they have been traversed multiple times by specially built robots, most recently with a camera capable of seeing around corners. Behind the first plate lies a short room and then a second plate. What lies beyond is unknown.

The individual rooms have their own stories, and they are too long for this page. Separate pages exist for the King's Chamber, the Grand Gallery, and the subterranean rock chamber.

What Hides in the New Cavities?

Despite everything that is known: The structure continues to pose puzzles, measurable ones.

Since 2015, an international research project has been examining the interior using muon radiography. Muons are created when cosmic radiation hits the atmosphere; they penetrate rock and are slowed down to varying degrees depending on material thickness. Detectors inside and around the structure register from which direction more muons arrive than expected, allowing researchers to infer cavities without moving a single stone.

Two findings are confirmed. In 2017, a large cavity above the Grand Gallery was published, at least thirty meters long. In 2025, confirmation followed of a passage behind the relieving beams on the north side, secured by three independent measurement methods. Both are peer-reviewed science, not rumor.

No one knows what these spaces are. The sober interpretations view them as structurally necessary: relieving constructions, remnants of an abandoned construction phase, voids for weight reduction. The spectacular interpretations suspect untouched chambers. For the spectacular claims, there is currently no evidence, and announcements of imminent openings should be read for what they are: announcements.

Why not just take a look? Because the structure is under heritage protection, and any drilling would be an irreversible intervention. The relevant authorities permit non-destructive methods, such as measurements, endoscopes through existing joints, and robots in existing shafts. Drilling a hole into intact masonry to test a hypothesis is something else entirely, and the caution exercised is not secrecy but the standard handling of an object of this significance.

More remarkable is the fundamental point. A structure that has been systematically measured for four hundred years still contains spaces no one knew about. What this means for the completeness of our knowledge is the actually interesting question. Details on both finds are available on the page regarding hidden chambers.

The Pyramid Never Stood Alone

A common misconception: The pyramid never stood alone. It was the main building of a sprawling complex, much of which is missing today.

On the east side lay the mortuary temple, whose floor consisted of black basalt. From there, a covered causeway led several hundred meters down to the valley to a second temple by the water. This valley temple now lies beneath modern development at the foot of the slope and is only partially excavated. The causeway has disappeared except for remnants.

To the south and east stand smaller pyramids for queens and family members, alongside a vast field of mastaba graves for the court, laid out in strict rows like a city plan. Anyone walking across the plateau who mistakes these low stone boxes for foundations is walking through a cemetery of the highest administrative class.

Then there are the boat pits. Seven pits belong to the complex; two contained disassembled ships made of cedar wood. The first was found in 1954, assembled over the years, and stood for decades in its own museum directly next to the structure. That museum no longer exists. The ship was moved to the Grand Egyptian Museum in 2021; the second followed from late 2025 onwards and is being assembled there in stages. The pits themselves remain, empty but visible.

Also belonging to the queen's pyramids is the strangest find of the entire complex. In 1925, an excavation team struck a vertical shaft filled with stones east of the pyramid. At the bottom lay an undisturbed chamber with gilded furniture: a bed, a palanquin, a canopy, along with jewelry and a container for viscera. The furnishings are attributed to the mother of the patron. However, the sarcophagus in the chamber was sealed and empty. How this fits together remains unsatisfactorily explained to this day.

For travelers, this is the most practical change in recent years. Anyone arriving expecting to see the boat on the plateau will be disappointed. It now stands kilometers away, in a new building, along with the rest of the collection.

The entire necropolis has been protected as a World Heritage Site since 1979, jointly with the pyramid fields of Saqqara and Dahshur. Protected is not a single structure, but a landscape.

Access, Tickets, and the Best View

Much has changed regarding the visit itself since 2025, and outdated travel guides regularly mislead.

The main access is no longer at the old gate near the hotel in the town center, but at a new visitor center on the desert road in the southwest. Private cars and tour buses are no longer allowed onto the grounds. If you arrive with a driver, you will be dropped off at the gate and picked up there. On the plateau itself, electric buses operate between the main points, and their use is included in the admission price.

The second gate at the Sphinx in the east remains open but has no ticket office. You can only enter if you already have your ticket. This is the most common avoidable mistake during a visit.

For the structure itself, you need to make two decisions. The first concerns the time of day: In the morning, it is cooler and the north side is lit favorably; in the late afternoon, shadows are better for photos, but it is hotter. The second concerns the interior. This requires an additional ticket at a multiple of the plateau price, the number of tickets is capped daily, and the path is narrow, warm, and devoid of any decoration.

Regarding where to best view the structure, a brief note: Directly in front, it is difficult to grasp the scale because the eye lacks a reference point. The impression forms only from a distance, when a person, a vehicle, or one of the subsidiary pyramids appears in the same frame. For this, there is a designated viewpoint in the southwest where all three structures appear in a row. It has its own page because the approach and time of day play a larger role there than at the structure itself.

The honest recommendation is therefore: Book the interior if you want the experience, the feeling of standing under six million tons of stone. Do not book it if you want to see something specific. There is considerably more to see outside.

What to Expect on the Plateau

A few practical points that are regularly underestimated on the plateau. There is virtually no shade, and the distances between the structures are greater than they appear. Sturdy shoes are advisable because the ground consists of sand, loose gravel, and stone steps. Bringing water is not a luxury but a necessity. And expect solicitation at the entrance and main points: camel and horse handlers, photo offers, souvenirs. A friendly but firm 'no' and walking away is the most effective response.

One caveat must be added. Which pyramids are accessible from the inside changes. The administration temporarily closes interior spaces for maintenance or conservation reasons, and this affects even the largest of the three structures. If it is closed, the other two pyramids are usually open and significantly cheaper, and the middle one has an unexpected strength: Its passage system is simpler, the chamber is in the rock rather than the masonry, and it is generally much emptier. As a substitute, this is not a makeshift solution but, for some, a more pleasant visit.

Prices change frequently in Egypt and are set in Egyptian pounds; the euro amount fluctuates accordingly with the exchange rate. Current information is available on the page regarding tickets and prices.