The Solomonic column, also called Barley-sugar column, is a helical column, characterized by a spiraling twisting shaft like a corkscrew. It is not signified by a specific capital style and may be crowned with any design, for example, a Roman Doric solomonic, Corinthian solomonic or Ionic solomonic column.
Etymology and origin 
Unlike the classical example of Trajan's Column of ancient Rome, which has a turned shaft decorated with a single continuous helical band of low-reliefs depicting Trajan’s military might in battle, the twisted column is known to be an eastern motif taken into Byzantine architecture and decoration. Twist-fluted columns were a feature of some eastern architecture of Late Antiquity.
In the 4th century, Constantine the Great brought a set of columns to Rome and gave them to the original St. Peter's Basilica for reuse in the high altar and presbytery; The Donation of Constantine, a painting from Raphael's workshop, shows these columns in their original location. According to tradition, these columns came from the "Temple of Solomon", even though Solomon's temple was the First Temple, built in the 10th century BCE and destroyed in 586 BCE, not the Second Temple, destroyed in 70 CE. These columns, now considered to have been made in the 2nd century CE, became known as "Solomonic". In actuality, the columns probably came from neither temple. Constantine is recorded as having brought them de Grecias i.e., from Greece, and they are archaeologically documented as having been cut from Greek marble. A small number of Roman examples of similar columns are known. All that can firmly be said is that they are early and, because they have no Christian iconography in the carving and their early date (before the construction of elaborate churches), are presumably reused from some non-church building. The columns have distinct sections that alternate from ridged to smooth with sculpted grape leaves.
Some of these columns remained on the altar until the old structure of St. Peter's was torn down in the 16th century. While removed from the altar, eight of these columns remain part of the structure of St. Peter's. Two columns were placed below the pendentives on each of the four piers beneath the dome. Another column can now be observed up close in the St. Peter's Treasury Museum. Other columns from this set of twelve have been lost over the course of time.
If these columns really were from one of the Temples in Jerusalem, the spiral pattern may have represented the oak tree which was the first Ark of the Covenant, mentioned in Joshua 24:26 . These columns have sections of twist-fluting alternating with wide bands of foliated reliefs.
From Byzantine examples, the Solomonic column passed to Western Romanesque architecture. In Romanesque architecture some columns also featured spiraling elements twisted round each other like hawser. Such variety adding life to an arcade is combined with Cosmatesque spiralling inlays in the cloister of St. John Lateran. These arcades were prominent in Rome and may have influenced the baroque Solomonic column.
In the 16th century Raphael depicted these columns in his tapestry cartoon The Healing of the Lame at the Beautiful Gate (illustration, above right), and Anthony Blunt noticed them in Bagnocavallo's Circumcision at the Louvre and in some Roman altars, such as one in Santo Spirito in Sassia, but their full-scale use in actual architecture was rare: Giulio Romano employed a version as half-columns decoratively superimposed against a wall in the Cortile della Cavallerizza of the Palazzo Ducale, Mantua (1538-39).
In Baroque architecture 
The Solomonic column was revived as a feature of Baroque architecture. The twisted S-curve shaft gives energy and dynamism to the traditional column form which fits these qualities that are characteristically Baroque.
Easily the best-known Solomonic columns are the colossal bronze Composite columns by Bernini in his Baldacchino at St. Peter's Basilica. The construction of the baldachin, actually a ciborium, which was finished in 1633, required that the original ones of Constantine be moved.
During the succeeding century, Solomonic columns were commonly used in altars, furniture, and other parts of design. Sculpted vines were sometimes carved into the spiralling cavetto of the twisting columns, or made of metal, such as gilt bronze. In an ecclesiastical context such ornament may be read as symbolic of the wine used in the Eucharist.
Peter Paul Rubens employed Solomonic columns in tapestry designs, ca 1626 , where he provided a variant of an Ionic capital for the columns as Raphael had done, and rusticated and Solomonic columns appear in the architecture of his paintings with such consistency and in such variety that Anthony Blunt thought is would be pointless to give a complete list.
The columns became popular in Catholic Europe including southern Germany. The Solomonic column spread to Spain at about the same time as Bernini was making his new columns, and from Spain to Spanish colonies in the Americas, where the salomónica was often used in churches as an indispensable element of the Churrigueresque style. The design was most infrequently used in Britain, the south porch of St Mary the Virgin, Oxford, being the only exterior example found by Robert Durman (Durman 2002), and was still rare in English interior design, an example noted by Durman is the funerary monument for Helena, Lady Gorges (died 1635) at Salisbury perhaps the sole use.
After 1660, such twist-turned columns became a familiar feature in the legs of French, Dutch and English furniture, and on the glazed doors that protected the dials of late 17th- and early 18th-century bracket and longcase clocks. English collectors and dealers sometimes call these twist-turned members "barley sugar twists" after the type of sweet traditionally sold in this shape.
Image gallery 
Solomonic columns applied with gilded vines on an iconostasion in Poland
Solomonic columns and other fanciful variants in the cloister of St John Lateran, Rome, early 13th century
Pompey in the Temple of Jerusalem by Jean Fouquet, 1470-1475
Papal throne from the cloister of St. John Lateran
See also 
- J. Ward-Perkins, "The shrine of St. Peter's and its twelve spiral columns" Journal of Roman Studies 42 (1952) p 21ff.
- They "seem to float unsupported", Andrew Hopkins, 2002. Italian Architecture from Michelangelo to Borromini p. 21.
- Also noted by Anthony Blunt, "Rubens and Architecture"The Burlington Magazine 119 No. 894 (September 1977, pp. 609-619) p. 613 note 19.
- Blunt, "Rubens and Architecture" 1977:613, note 19.
- Durman, Richard, 2002. "Spiral Columns in Salisbury Cathedral." Ecclesiology Today, Journal of the Ecclesiological Society. Issue 29, September 2002. PDF of the magazine article on Solomonic columns.
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- Two of the columns as presently used in St. Peter's
- Raphael's Healing of the Lame Man, tapestry cartoon, 1515–16
- Rubens' The Gathering of Manna, oil sketch for tapestry, ca. 1626, for a tapestry at the Convent of the Descalzas Reales, Madrid
- Richard Durman, "Spiral columns in Salisbury Cathedral" in Ecclesiology Today, 29 (September 2002)