Ancient Greek Architectural Orders: Doric, Ionic, and Corinthian

The architecture of ancient Greece has come to define “classical” and “traditional” architecture as we know it today in the Western world. You might be familiar with the three classical orders—Doric, Ionic, Corinthian—but here you’ll dive deeper on each one. The orders all have their own uses and significance—and they still have relevance in the architectural world today, providing the foundation for classical design.

So what are the differences between the Doric, Ionic, and Corinthian columns and their corresponding orders? Read on to learn more about the Greek orders and their characteristics and history, and how to distinguish between each one.

First, let’s define what an order is in the first place. An order is a particular style of classical architecture that’s defined and recognized by its column and corresponding entablature. The basic unit created by this assemblage forms the basis for the rest of the structure’s style.

Simply put, an order is the unit formed by a specific column and entablature. The column comprises the base, the shaft, and the capital on top. The entablature, supported by the columns, comprises the architrave, the frieze, and the cornice.  

The oldest of the orders, the Doric order originated in mainland Greece around the 7th century BCE. It’s also the most plain of the orders, characterized by a simple, smooth capital on top and usually no base. The Doric column shaft is the stockiest of the orders, with a diameter-to-height ratio of eight to one, and the shaft is often smooth rather than fluted (although it can be fluted). The Parthenon, built in the 5th century BCE in Athens, is perhaps the most famous example of a Doric order building.

Only slightly younger than the Doric order, the Ionic order originated in Ionia (part of the western coast of modern-day Turkey) around the 6th century BCE. It’s defined by its scroll-shaped capitals, or volutes, atop more slender, elegant shafts with a diameter-to-height ratio of nine to one. Ionic columns typically have fluted shafts and attic bases. The earliest documented Ionic building was the Temple of Hera on the island of Samos, leveled in an earthquake not long after its completion. The Temple of Artemis at Ephesus is one of the earliest still-standing examples of the Ionic order.

Developed in the 5th century BCE, the Corinthian order is the most elaborate of the Greek orders. It’s characterized by the most slender columns, with a diameter-to-height ratio of ten to one, and ornate capitals of decorative acanthus leaves. Corinthian columns have similarities to Ionic: they feature the same attic base. Developed by the Greek, these columns were more often used by the Romans—the Parthenon in Rome is one of the most famous examples.

The Romans used all three of the ancient Greek orders, and they built upon these principles to develop two other styles—Tuscan and Composite—for a total of five orders. 

The Tuscan order is an even simpler iteration of the Doric order, defined by its smooth, un-fluted shafts and its simple entablature with no triglyphs or metopes. Unlike Doric columns, Tuscan columns usually feature simple bases.

The Composite order is more elaborate than Corinthian. It combines features of Ionic and Corinthian columns, with elaborate capitals that feature both the acanthus leaves of Corinthian columns and the scroll-shaped volutes of Ionic columns.

In ancient Greece, the orders were used especially in temples and other major public buildings, where they helped signal dignity, civic importance, and religious purpose. The orders weren’t just decorative styles but systems of proportion, structure, and ornament. Each order defined the column, capital, and entablature in a different way, so builders could create buildings that felt sturdy, elegant, or lavish depending on the effect they wanted. Over time, the Romans adopted and adapted the orders, and later Renaissance and Neoclassical architects revived them as a reference point for “correct” classical design.

The Roman writer Vitruvius, who lived during the first century BCE, was the first to record and classify the classical orders in his multi-volume work, De architectura. These writings, the only to survive from antiquity on architecture of that period, were rediscovered and heavily studied during the Renaissance. The Renaissance architects who studied Vitruvius then came up with more detailed theories and rules for the classical orders, like defining exact proportions and characterizing Doric as masculine, Ionic as matronly, and Corinthian as maidenly.

Among these usage rules were details on how the orders should be stacked. On large buildings with multiple stories of columns, either on the facade or inside, the orders are stacked in order of detail. You’ll find Doric columns on the bottom, Ionic columns on the level above, and Corinthian columns above that.

Today, the Greek orders are still used both directly and symbolically. You’ll see them in government buildings, museums, universities, courthouses, and memorials, where they communicate permanence, authority, and cultural prestige. Even when modern buildings don’t copy them exactly, the orders remain a foundational reference for Western architecture and a shorthand for classical beauty.