The unicorn is one of the most powerful symbols in European art history. As a mythical creature with a horse-like body and a spiral horn on its forehead, it embodies purity, aloofness and supernatural power – and has done so since ancient times. Although it never existed, its presence in paintings, book art, tapestries and heraldry has been as commonplace for centuries as the depiction of real animals. Understanding the unicorn in art history reveals a dense web of religious allegory, courtly culture and natural history wonder.

Origin: between natural history and myth

The earliest descriptions of the unicorn do not come from poetry, but from the natural history of ancient Greece. In the 4th century BC, the physician Ctesias reported on a wild animal in India with a single, long horn – presumably referring to the rhinoceros or oryx antelope, whose silhouettes show only one horn when viewed from the side. The idea of a noble, white horse with magical powers developed from such travelogues and their transmission over generations. Its horn, known as an alicorn in scholarly tradition, was regarded as a powerful antidote. In the Middle Ages, narwhal horns were traded as supposed alicorns at astronomical prices and kept in church and court treasuries.
The Greek Physiologus, an early Christian animal book from the 2nd or 3rd century AD, laid the foundation for the religious reinterpretation of the unicorn. He described the animal as small but overwhelmingly strong, and added that it only approaches a virgin – a characteristic that Christian theology eagerly picked up on.

The unicorn in Christian iconography

In Christian iconography, the unicorn became an allegory of Christ and the incarnation of God: just as the wild, untamable animal can only be tamed by a virgin and settles in her womb, so Christ took on flesh in the womb of the Virgin Mary. This allegory, the so-called unicorn hunt as Marian symbolism, pervades medieval art in countless variations – from book illustrations and altarpieces to tapestry art.
An outstanding example is the tapestry “Unicorn in Captivity” from the cycle of the so-called Unicorn Hunts, created around 1495-1505, now in The Cloisters, Metropolitan Museum of Art, New York. The Master of the Unicorn Hunt – the name of the artist or studio is not known – shows the unicorn resting in an enclosure of pomegranate trees, tied up with a chain. The flowers and fruit in the background have been chosen with iconographic precision: The pomegranate stands for resurrection, the unicorn for the imprisoned but triumphant Christ. The tapestry combines religious allegory with the elegance of courtly representation in a unique way.
Parallel to the religious tradition, a courtly-profane interpretation of the unicorn developed as a symbol of chaste love and the virtuous woman. This dual meaning – religious and secular at the same time – makes the unicorn one of the most flexible iconographic motifs of the Middle Ages and early modern period.

La Dame à la Licorne and the art of courtly tapestry

The highlight of secular unicorn iconography is the tapestry cycle “La Dame à la licorne” (The Lady with the Unicorn), created around 1500 and now in the Musée de Cluny in Paris. The six tapestries depict a noble lady with a unicorn and a lion, surrounded by flowers, animals and elaborate tendril motifs on a red millefleurs ground. Five of the depictions symbolize the human senses – sight, hearing, smell, taste and touch – while the sixth bears the enigmatic inscription “À mon seul désir” (My only wish). The exact meaning of this last panel is still disputed today: some researchers see it as the mastery of the senses, others as an allegory of love.
In this context, the unicorn stands for purity and exquisiteness, but also for the taming power of the noble lady – a motif that draws equally from chivalric minned poetry and Christian Marian symbolism.

Heraldry, natural history and after-effects

The unicorn has a firm place in heraldry. In Scotland, it has been a royal heraldic animal since the 12th century and is still regarded as the country’s national animal. In the British royal coat of arms, the Scottish unicorn stands opposite the English lion – and wears a chain, as a free unicorn was considered uncontrollable and dangerous.
With the Enlightenment, the unicorn lost its place in natural history, but remained alive in art and literature. Romanticism took up its symbolism again. In contemporary art, the unicorn often appears ironically or deconstructively – as a commentary on the construction of myths and collective desires. Nevertheless, it has not lost its original iconographic power: as a symbol of the pure, intangible and miraculous, the unicorn remains a living symbol.