An order is a coherent system: a column with its base, shaft and capital, and the entablature it carries, in fixed proportional relationships. Doric has no base, a plain cushion capital and a frieze of triglyphs and metopes; Ionic has a base, a slenderer shaft and a volute capital; Corinthian has an acanthus capital and became the Roman favourite.
Vitruvius codified them, and in doing so gave them an anthropomorphic origin story: Doric as the proportions of a man, Ionic of a woman, Corinthian derived from a basket of acanthus on a girl's grave. These accounts are charming and are not history — they are a Roman writer supplying an explanation for forms already centuries old.
The codification mattered more than the accuracy. Through Vitruvius the orders became prescriptive for the Renaissance and after, which is why the vocabulary of a Greek temple is legible on a nineteenth-century bank.
What the evidence supports
The orders are systems of proportion, not just decorative styles.
Vitruvius states the ratios, and the surviving buildings broadly follow them while varying considerably in practice.
Vitruvius's origin stories are aetiology, not history.
The forms predate his account by centuries and no earlier source gives these explanations.
Real buildings depart from the canonical proportions.
Measured surveys show substantial variation between temples of the same order, which the codified scheme conceals.
Terms
- entablature
- Everything the columns carry: architrave, frieze and cornice.
- triglyph and metope
- The alternating grooved blocks and panels of the Doric frieze.
- volute
- The spiral scroll of the Ionic capital.
Examples
The evidence level on each answers how we know what the building looked like, not whether it existed.
- Evidence level: Documented
Athens · 447–432 BCE
The Parthenon (Doric, with Ionic elements)
Doric externally, with an Ionic frieze around the cella — a mixture the canonical scheme does not anticipate. Standing, and among the most closely measured buildings in the world.
- Evidence level: Documented
Athens · c. 421–406 BCE
The Erechtheion (Ionic)
Including the Caryatid porch, where figures replace columns entirely. Standing, with the Caryatid porch surviving in part.
Primary sources
Vitruvius, On Architecture 3–4
The orders, their proportions and the origin stories.
How to read the evidence labels
- Evidence level: Documented
- Supported by a named primary text or by excavated material evidence.
- Evidence level: Probable
- Supported by strong inference that most specialists accept.
- Evidence level: Disputed
- Substantial specialist disagreement exists; competing readings are stated.
- Evidence level: Literary
- Belongs to poetic or mythological construction rather than to history.
- Evidence level: Mythological
- Belongs to shared religious or mythic tradition rather than to any single text.
- Evidence level: Unknown
- The available evidence is insufficient to decide.
These labels describe the status of the evidence, not our confidence in a conclusion. A claim marked Literary is not a claim we doubt; it is a claim about what kind of thing a poem is.