Composite order
The Composite order stands at the top of the classical hierarchy as the most ornate column style the ancient Romans ever devised. It marries the scrolled volutes of the Ionic capital with the lush acanthus leaves of the Corinthian, and then adds something more: a central ornament placed between the volutes, giving the capital a density of decoration that sets it apart from everything that came before. But for more than a thousand years, architects did not consider it a separate order at all. It was simply a Roman variant of Corinthian, a local habit of excess rather than a distinct design language. How did a capital that first appeared in imperial Rome end up as one of the five pillars of classical architecture? And what made it the preferred form for churches dedicated to the Virgin Mary?
The Arch of Titus, built in 82 AD in the Roman Forum, is the example most often cited as the Composite order's first prominent surviving appearance. The order did not spring fully formed from that monument, however. Scholars believe it was probably invented a little before the reign of Augustus, and was certainly well-developed before his death, arriving at exactly the moment when the Roman interpretation of the Corinthian order was being established as an imperial standard.
Unlike the Tuscan and Corinthian orders, the Composite has no counterpart in ancient Greek architecture. It was a Roman invention, and the Romans did not separate it from Corinthian in their theoretical writing. Vitruvius, the great Latin authority on architecture, did not include the Composite among his three canonical orders at all. The Arch of Septimius Severus in Rome and the mid-fourth-century interior of Santa Costanza, also in Rome, stand as further early examples of how widely the style spread through the imperial city before any theorist thought to give it a name of its own.
The column of this order is typically ten diameters high, a proportion that places it among the taller and more slender of the classical column types.
Ionic volutes, seen from the front, are joined by a roughly horizontal band across the capital's top, so that the whole assembly reads like a scroll partly rolled at each end. The Composite takes that basic idea and transforms it. Rather than treating the two volutes as a single connected unit, many Composite capitals present each volute as an independent element, springing separately from a leafy base. That independence creates a visual rhythm closer to the much older Archaic Greek Aeolic order, though there is no evidence that Roman designers were consciously borrowing from that ancient precedent.
Where the Greek Ionic volute runs at a uniform width between the front and back of the column, the Composite version normally splits into four thinner units, one at each corner of the capital, each projecting at roughly forty-five degrees to the facade. That diagonal placement solves a practical problem: it removes the need for the capital to look different when viewed from the front versus the side. The Ionic order eventually arrived at curved forms that achieved the same result, but the Composite reached it earlier and more directly.
Designers who worked with the Composite also treated the space between the volutes as an opportunity. Figures, heraldic symbols, and other ornament have all appeared there. The relationship of the volutes to the leaves below them has been handled in many different ways across different buildings, and the capital may be divided into distinct horizontal zones or treated as one unified sculptural mass.
Leon Battista Alberti was among the first Renaissance thinkers to notice the Composite as something worth naming. In his treatise De re aedificatoria, known in English as On the Art of Building, he called the style "Italic," acknowledging its Roman character without elevating it to the status of an independent order.
That step fell to Sebastiano Serlio, who lived from 1475 to 1554. In his book I Sette libri dell'architettura, published in 1537, Serlio was the second writer to treat the Composite as its own distinct order rather than simply an evolution of the Corinthian. When Renaissance theorists also formalized the Tuscan order, a simplified reading of the Doric that had existed in ancient Roman architecture but was likewise absent from Vitruvius, they arrived at five classical orders in total. The Composite sat at the summit of that system, considered the most complex and richest of all.
Renaissance taste assigned the Composite a specific social purpose as well. Its delicate yet elaborate appearance made it the preferred choice for churches dedicated to the Virgin Mary or other female saints. More broadly, it came to signal richness and grandeur in any building that deployed it.
Francesco Borromini, who lived from 1599 to 1667, pushed the Composite order into territory that made his contemporaries genuinely angry. At San Carlo alle Quattro Fontane in Rome, begun in 1638, he fitted the interior with sixteen Composite columns. The columns placed directly under the arches carry inverted volutes, turning the standard capital upside down. Critics at the time read this as evidence that Borromini simply did not understand the Vitruvian orders, rather than as a deliberate formal choice.
The controversy deepened at his Oratorio dei Filippini in Rome, where he again used inverted volutes in the lower order. There he went further: he removed the acanthus leaves entirely, leaving what amounted to a bare capital stripped of its defining ornament. The response was sharper still. For an order that had been defined by its accumulation of decorative elements, the removal of those elements struck many observers as a fundamental misunderstanding, or a provocation.
Donato Bramante, who lived from 1444 to 1514, had used the Composite order more conventionally in the second tier of the cloister of Santa Maria della Pace in Rome, pairing it with an Ionic first order below. Borromini's experiments at San Carlo and the Oratorio stood in marked contrast to that restrained precedent.
Filippo Brunelleschi brought the Composite order into the vocabulary of the early Renaissance at the Ospedale degli Innocenti in Florence in 1421. Andrea Palladio returned to it twice in Vicenza: the Palazzo Valmarana in 1565 and the Palazzo del Capitaniato, built between 1571 and 1572. Both buildings demonstrate how the order could register ambition and civic weight in a secular context.
In England, the order appeared at Easton Neston around 1700, and William Chambers used it at Somerset House in London in 1776. The Narva Triumphal Arch in Saint Petersburg dates to 1814, showing how the order continued to carry associations with imperial display well into the nineteenth century. Filippo Juvarra used it at the Palazzo Madama in Turin around 1720, a decade that also saw it appear at the Alabama Governor's Mansion, completed in 1907. The Archbasilica of St. John Lateran and the Church of the Gesù in Rome also stand among the buildings that made the Composite a recurring presence in sacred architecture across several centuries.
Common questions
What is the Composite order in classical architecture?
The Composite order is a Roman architectural column style that combines the volutes of the Ionic capital with the acanthus leaves of the Corinthian order. It is typically ten diameters high and is considered the most ornate of the five classical orders.
What is the earliest surviving example of the Composite order?
The Arch of Titus, built in 82 AD in the Roman Forum, is the most commonly cited first prominent surviving example of the Composite order. The style is believed to have been invented a little before the reign of Augustus.
Who first described the Composite order as a separate architectural order?
Sebastiano Serlio (1475-1554) was the second writer to treat the Composite as an independent order in his book I Sette libri dell'architettura, published in 1537. Leon Battista Alberti had mentioned it earlier, calling it "Italic," but viewed it as a variant of Corinthian rather than a separate order.
How did Francesco Borromini use the Composite order at San Carlo alle Quattro Fontane?
At San Carlo alle Quattro Fontane in Rome, begun in 1638, Borromini installed sixteen Composite columns with inverted volutes on the load-bearing columns beneath the arches. This was highly criticised at the time as a violation of the Vitruvian orders.
Why was the Composite order associated with churches dedicated to the Virgin Mary?
Renaissance writers deemed the Composite order suitable for churches dedicated to the Virgin Mary and other female saints because of its delicate appearance. More broadly, it came to signal richness and grandeur in both sacred and secular architecture.
Is the Composite order found in ancient Greek architecture?
The Composite order is not found in ancient Greek architecture. It was a Roman invention and was not ranked as a separate order until the Renaissance, having previously been regarded as an imperial Roman variant of the Corinthian order.