The Erechtheion is not the most beautiful building on the Acropolis. The Parthenon holds that distinction by general consensus, and the consensus is not wrong. But the Erechtheion is the most ancient in its accumulated obligations, the building on the Acropolis that carries the deepest layer of religious debt to the place it occupies, and the one whose architectural irregularity is the most direct material evidence of those obligations.
The building’s plan is asymmetrical, multi-leveled, and oriented in multiple directions simultaneously, none of which correspond to the single-axis plan that the canonical Greek temple form followed. This is not an aesthetic choice and it is not an architectural failure. It is the direct consequence of what the Erechtheion was built to house: a collection of sacred sites, objects, and cults so ancient and so specifically located in the terrain of the Acropolis’s northern edge that no regular plan could accommodate them without destroying or displacing what they marked.
The saltwater spring that Poseidon struck from the rock with his trident. The olive tree that Athena planted in response. The grave of the mythological king Erechtheus, who gave the building its name and who was swallowed by the earth on the spot where he fell. The tomb of Kekrops, the serpent-bodied first king of Athens. The altars of Poseidon, Hephaestus, and the hero Boutes. The sacred snake that the Athenians understood as the earthly manifestation of Erichthonius and that the priestesses fed with honey cakes and whose presence or absence was read as an omen for the city’s condition.
Each of these required a place. The building was designed around the places, not the places around the building.
The Site and Its Obligations
The northern edge of the Acropolis plateau, where the Erechtheion stands, was the most sacred ground on the hill before the classical building program of the fifth century BCE and remained so throughout the classical period. The reasons for this were geological and mythological simultaneously: the features of the rock at this point, the crevices, the water seepage, and the unevenness of the surface, were the physical evidence that the mythological tradition interpreted as the marks of the divine contest.
The trident marks of Poseidon are documented by Pausanias, who visited the Acropolis in the second century CE and described an opening in the roof of the Erechtheion through which the sea-smelling water that Poseidon had struck from the rock was visible below. This opening was not an architectural accident but a deliberate preservation of the sky-to-rock connection that the divine contest had established: the marks on the rock needed to remain accessible to the sky above them because they were evidence of a divine act, and enclosing them entirely would have violated the nature of the evidence.
The olive tree of Athena stood in the open precinct to the west of the Erechtheion, accessible from the building but not enclosed within it. Its relationship to the building was the relationship of the most significant sacred object to its precinct rather than the relationship of a feature to a room. When the Persians burned the Acropolis in 480 BCE and the olive tree burned with everything else on the hill, the shoot that appeared from the charred stump the following day was understood as divine confirmation that the goddess had not abandoned the city, and the tree’s continuity from that shoot to the one that stood in the precinct during the classical period was the material evidence of that continuity.
The grave of Kekrops, located specifically in the southwest corner of the building in the area covered by the Caryatid porch, was the physical proof that the mythological history of the site was materially present in the ground. Kekrops was the first king of Athens in the tradition that placed him before even Erechtheus: the serpent-bodied king born from the earth, who had presided over the contest between Athena and Poseidon, and whose grave within the sacred precinct connected the building to the deepest layer of the city’s mythological foundation.
Erechtheus and the Myth Beneath the Floor
Erechtheus, the mythological king whose name the building carries, was one of the most important and least internationally known figures in Athenian religious tradition, and the complexity of his myth reflects the depth of the obligations that the Erechtheion was built to honor.
Erechtheus was the king who defeated the Eleusinians when they invaded Attica under the leadership of Eumolpus, who was the son of Poseidon. To win the war, Erechtheus sacrificed one of his daughters, following an oracle that required this price for the city’s survival. He defeated the Eleusinians and killed Eumolpus. Poseidon, in response to the killing of his son, demanded that Zeus punish Erechtheus, and Zeus struck the king with a thunderbolt or, in an alternative version that Poseidon killed him directly with his trident, drove him into the earth at the point on the Acropolis’s northern edge where the seismic crack and the saltwater spring were already present as evidence of divine contact with the rock.
The grave of Erechtheus within the Erechtheion was therefore not the grave of a man who had died normally. It was the marked location of a divine act of destruction, the place where the earth had opened to receive a king who had done what the city required of him and had been killed for it by the god he had offended. The building that stood over this location was the building that acknowledged the full weight of what had happened there.
Euripides wrote a tragedy, the Erechtheus, of which significant fragments survive, that developed this myth in the terms of tragic conflict between divine demands and human love: Praxithea, the queen who agrees to sacrifice her daughter for the city’s survival, delivers one of the most remarkable speeches preserved from classical drama, arguing for the precedence of civic obligation over private grief. The fragments suggest a tragedy of extraordinary moral seriousness, and its relationship to the cult at the Erechtheion, which Praxithea’s priesthood was understood to continue in the classical period, was direct: the drama was participating in the same religious tradition that the building housed.
Erichthonius and the Sacred Snake
The figure of Erichthonius, who is sometimes identified with Erechtheus in the ancient sources and sometimes treated as a distinct mythological king who preceded him, is the figure most directly connected to the sacred practices that the Erechtheion maintained.
Erichthonius was born from the earth through the following sequence of events: Hephaestus, attempting to violate Athena, was repulsed by the goddess, and his seed fell to the earth, from which Erichthonius was born. Gaia, the earth, gave the infant to Athena, who placed him in a box or chest and gave him to the daughters of Kekrops, specifically Pandrosos, Herse, and Aglauros, with the instruction that they should not look inside.
The daughters of Kekrops looked inside. What they saw, the ancient sources variously describe as a child with serpentine features, a child guarded by serpents, or a pure serpent, produced in them the quality of divine madness, akataplettos, that the opening of a forbidden sacred object was understood to produce in the ancient world. They threw themselves from the Acropolis.
Erichthonius was raised by Athena in secrecy within the sacred precinct on the Acropolis, and eventually became king of Athens, instituting the Panathenaic festival and the form of worship of Athena that the later tradition maintained. His connection to the serpent, either through his birth or through the snake guardian associated with him, was the mythological foundation for the sacred snake that was maintained in the Erechtheion through the classical period: a snake understood as the earthly presence of Erichthonius, fed by the priestesses with honey cakes, and whose annual consumption or refusal of the offering was read as an omen for the city’s condition.
The honey cakes that the priestesses offered to the sacred snake were not offered to a literal snake, though the snake was also literal. They were offered to the divine principle that the snake represented: the chthonic, earth-born, pre-Olympian dimension of the city’s divine patronage, the ancient tradition that preceded and underlay the Olympian worship of Athena Polias that the same precinct maintained. The Erechtheion housed both simultaneously, the ancient and the Olympian, and its complexity was the architectural expression of this double obligation.
The Caryatid Porch
The south porch of the Erechtheion, the Porch of the Maidens as Vitruvius called it and as the English tradition has preserved in the designation Caryatid Porch, is the architectural feature that has made the building most recognizable in the global visual culture of ancient Greece.
Six female figures in the Ionic chiton, standing in the contrapposto position with their weight on one leg and the opposite hip raised, serve as the columns that support the porch’s roof. The structural function is real: the figures support the entablature above them, and their fluted drapery functions as the equivalent of the fluted column shaft, the vertical lines of the garment performing the same optical role as the grooves in a column. The engineering is precise: the figures’ necks and the capital above them are thickened to carry the structural load without reducing the visual slenderness that the Ionic proportional system required.
The name Caryatid derives from the ancient tradition that connects the figures to Karyai, a Laconian town, and to the women who served as the chorus in the rituals of Artemis Karyatis. Whether this etymology correctly identifies the figures’ cultic reference or is a later rationalization of an architectural term whose original meaning had been forgotten is disputed in the scholarship, but the figure type itself, the female figure as architectural support, appears in Greek art before the Erechtheion and in contexts that suggest the association of the female body with the structural function of bearing weight was not novel in the fifth century.
The six figures visible at the Acropolis today are copies: five of the originals are in the Acropolis Museum, where they can be seen in the condition that 2,400 years of outdoor exposure and the atmospheric pollution of the twentieth century have produced, and the sixth was removed by Lord Elgin in 1801 and is in the British Museum in London. The Acropolis Museum displays the five originals with a cast of the sixth in the position it would have occupied, making the absence of the London figure visible rather than masked, which is the museum’s deliberate statement on the question of the Elgin Marbles.
The Building’s History Through Time
The construction of the Erechtheion began after 421 BCE, following the Peace of Nicias that temporarily halted the Peloponnesian War, and was completed around 406 BCE, in the last years before Athens’s final defeat by Sparta in 404 BCE. The building’s construction therefore spanned the period of Athens’ political catastrophe, and the resources committed to its completion during the city’s military and financial crisis reflect the priority that the religious obligations it housed held in the Athenian understanding of what the city needed to maintain.
The inscription recording the building accounts of the Erechtheion, which survives in substantial portions, is one of the most informative documents of classical Athenian architectural practice: it names the individual craftsmen who worked on elements of the building, specifies the wages paid, and documents the rate of work on the most elaborate carved elements. The accounts reveal that the craftsmen who carved the Caryatids and the carved Ionic frieze blocks were paid at the same daily rate as ordinary unskilled workers on the project: the classical Athenian economy did not differentiate in pay between skilled artistic production and physical labor in the way that later economic traditions would.
A fire in the first century BCE, probably during the Sullan occupation of Athens in 86 BCE when Sulla’s forces ransacked the city, damaged the building substantially. The repair work undertaken in the late first century BCE is documented and provides the basis for our understanding of the building’s pre-fire condition in the areas where the original fabric was replaced. The Roman-period repair used the same Pentelic marble as the original building and maintained the proportional system with sufficient precision that the repaired sections are not always immediately distinguishable from the originals.
The conversion to Christian use in the Byzantine period, probably in the seventh century CE, involved the installation of a Christian floor level above the ancient one and the insertion of a doorway in the eastern wall. The cella was used as a bishop’s residence at some point during this period, and the building’s interior was substantially altered. The Ottoman period added a further layer: the building served for a time as the harem of the Turkish garrison commander, a use that the nineteenth-century archaeology of the structure documented through the surviving partition walls of that period.
What the Building Is
The Erechtheion is not the most beautiful building on the Acropolis, but it is the most necessary one in the sense that the Acropolis without it would be an incomplete statement of what the hill’s religious geography represented.
The Parthenon is the statement of Athenian political and artistic ambition in the fifth century BCE: the most expensive temple in the Greek world, built from the tribute of the Delian League, housing the most magnificent cult statue ever made. It is the building Athens built when it was at the height of its power and wished to record that power in permanent form.
The Erechtheion is the building that kept Athens honest: the structure that acknowledged the debts the city owed to what had been there before the Parthenon, to the mythological kings and the divine contests and the earth-born creatures and the sacred serpent and the spring and the olive tree that predated the political ambition by centuries. It kept these obligations in the same physical space as the new construction, insisting that the Parthenon’s statement of power did not replace but stood alongside the older statement of what the hill had always been.
The two buildings read together as the complete text of the Acropolis: power and obligation, ambition and debt, the Olympian and the chthonic, the new and the impossibly old. Visitors who spend the morning at the Parthenon and the afternoon at the Acropolis Museum should spend some time at the Erechtheion between, reading its irregular plan and its multiple cults and its Caryatids as the building that knew what the hill was before it was a monument.
At Olympus Estate, Archaeology and Ancient Sites treats no ruin as merely a ruin and no temple as merely a monument. The Erechtheion held a saltwater spring, an olive tree, the grave of a king swallowed by the earth, a sacred snake, and the most important cult statue in Athens simultaneously. The building is the list of what it owed. The list is still legible in the plan.
