| Name: | Trier Cathedral |
| Construction began: | sometime between 310 and 320 |
| Commissioned by: | Bishops Agritius and Maximin |
| Architectural styles: | Romanesque, Gothic, Baroque |
| Length x width: | 112.5 metres x 41 metres |
| Tallest structure: | southwestern main tower, approximately 76 metres high |
| Number of visitors: | approx. 1.3 million per year |
| UNESCO World Heritage Site: | since 1986 |
Trier Cathedral: Germany’s Oldest Church and Its Hidden Treasures
Location: Trier Cathedral stands in Trier’s historic centre, just a few steps from the Main Market Square. The Church of Our Lady is located directly beside it. Together, the two churches form an important historic ensemble.
Significance: Trier Cathedral is the oldest church in Germany. More than 1.3 million people visit it each year, making it one of the region’s most important and popular attractions. Its official name is the High Cathedral Church of St Peter in Trier, and it is dedicated to the Apostle Peter.
Episcopal Tradition: As the seat of the Bishop of Trier, Trier Cathedral forms the spiritual centre of the diocese. The succession of bishops in Trier dates back to Roman times and is the oldest in Germany. Eucharius is regarded as the city’s first bishop and led Trier’s Christian community around the middle of the 3rd century. The site of the present Trier Cathedral has served as an episcopal church for around 1,700 years. It was not until the Middle Ages that the archbishops of Trier also acquired secular power and later ruled the Electorate of Trier. As prince-electors, they ranked among the most influential rulers of the Holy Roman Empire and took part in the election of the King of the Romans. The French occupation of 1794 marked the beginning of the end of their rule, and the electorate was finally dissolved in 1803. Monumental tombs inside Trier Cathedral still reflect the political status once enjoyed by its archbishops.
Earlier Buildings: The site of the present Trier Cathedral was originally occupied by an affluent Roman residential district. Its buildings included a richly decorated hall with wall paintings and a painted coffered ceiling. Between 310 and 320, part of the residential development was demolished and replaced by a large Christian basilica. Under Bishop Maximin, this first basilica was expanded into an extensive church complex containing four basilicas, a baptistery, several courtyards and numerous adjoining rooms. The entire complex was approximately four times the size of the present Trier Cathedral and extended almost as far as the Main Market Square. Construction of the monumental square structure began around 340, with each side measuring approximately 40 metres. Its massive Late Antique walls still form the core of Trier Cathedral today.
Historical Context: At the time the first churches were built, Trier was one of the most important cities in the Roman Empire. From the late 3rd century onwards, it served as an important imperial residence and a major administrative centre of the western empire. The imperial court and numerous government offices were located close to the site of the future Trier Cathedral. At the beginning of the 4th century, Christians gained the right to practise their faith freely and construct large churches. During the rest of the century, most emperors tolerated or supported Christianity, although their personal attitudes towards the religion varied.
Construction History: Trier Cathedral developed over more than 1,600 years through repeated destruction, reconstruction and expansion. Large sections of the Late Antique church complex were destroyed in the 5th century. Bishop Nicetius had the square structure and other areas restored in the 6th century. Vikings caused severe damage once again in 882. A major medieval expansion began in the late 10th century. Under Archbishop Poppo of Babenberg and his successors, the crypts, western choir and monumental western façade were constructed. The eastern choir was consecrated in 1196. The vaults, galleries and cloister followed in the 13th century. Baroque altars, funerary monuments and the chapel for the Holy Robe were added during the 17th and 18th centuries. Further alterations became necessary after a serious roof fire in 1717. Restorations carried out in the 19th century were intended to bring Trier Cathedral’s medieval appearance back into greater prominence.
Trier Cathedral During the Second World War: Heavy air raids on Trier in December 1944 destroyed or severely damaged large sections of the roof, the cloister and the Chapel of the Holy Robe. However, the massive Roman and medieval walls and much of the main vaulting survived. This prevented the central interior of Trier Cathedral from collapsing completely. Valuable works of art and parts of the cathedral treasury had already been moved to secure locations. Gradual reconstruction began after the war, and Trier Cathedral received a new set of bells in 1951.
Extensive Post-War Renovation: When a stone fell from the vault in 1959, experts discovered serious damage to the foundations, walls and vaults. The drop in the groundwater level had probably caused parts of the old timber pile foundations to dry out and decay. Securing the building required 766 tonnes of lime and cement and 450 tonnes of steel. Since then, a largely invisible steel framework has stabilised the walls, towers and roof. At the same time, architects Gottfried Böhm and Nikolaus Rosiny carefully redesigned the interior. After 15 years of renovation, Trier Cathedral reopened on 1 May 1974.
Architecture: Trier Cathedral is 112.5 metres long and 41 metres wide, making it the largest church building in the city. Its architectural centre is the square structure from Late Antiquity. In some places, the Roman masonry still survives to a height of approximately 25 metres. It consists mainly of red sandstone interspersed with distinctive bands of brickwork. Many later structural elements were built from pale sandstone. Originally, four granite columns approximately 12 metres high supported the massive arches of the square structure. Each column weighed around 65 tonnes and was transported from the Odenwald region to Trier. Two fragments of one of these columns now lie in front of the western portal and are known as the Cathedral Stone. Romanesque choirs and towers, medieval ribbed vaults, Gothic structural elements and Baroque furnishings complement the ancient core. Constructing a vault over the approximately 17-metre-wide central nave was an exceptional technical achievement in the 13th century. Despite its variety of architectural styles and materials, Trier Cathedral presents a largely harmonious overall appearance.
Cathedral Stone: Two massive fragments of a granite column lie in front of the main portal. They were discovered beneath the floor of Trier Cathedral in 1614. The original column was approximately 12 metres high and weighed around 65 tonnes. Together with three other columns, it supported the monumental church building from Late Antiquity. After the fragments were recovered, they were placed in front of the portal. For centuries, it appears that no one saw any reason to remove this impressive remnant. According to legend, the devil helped transport the columns because the master builder tricked him into believing that the world’s largest inn was being built on the site. When the devil discovered the deception, he is said to have hurled the final column at Trier Cathedral in a fit of rage. However, he missed his target.
Holy Robe: According to tradition, the Holy Robe is believed to be the garment worn by Jesus and is one of the most important relics in Trier Cathedral. A Baroque chapel was built at the eastern end of Trier Cathedral to house it. The chapel is normally closed and opens only on special occasions. The relic was first clearly mentioned in 1196 and displayed publicly for the first time in 1512. This display prompted a major pilgrimage. Further presentations followed at irregular intervals, including one in 2012. Today, the fragile textile is kept inside a wooden shrine beneath a climate-controlled glass enclosure. However, its connection to the garment of Jesus cannot be proven either historically or scientifically.
Swallow’s Nest Organ: Mounted high on the northern wall of the central nave, the main organ of Trier Cathedral appears to float like a giant swallow’s nest despite weighing around 30 tonnes. Completed in 1974, the instrument has 67 stops and more than 5,600 pipes. A small wooden figure is hidden in the lower section of the casing and can be made to emerge by the organist using a special mechanism. Known as the little organ devil, the figure then plays five slightly discordant notes on a set of panpipes. This humorous feature provides a surprising contrast to the imposing organ.
Burial Place of the Archbishops of Trier: Since the Middle Ages, Trier Cathedral has served as the burial place of numerous bishops and archbishops. The surviving funerary monuments range from medieval raised tombs to elaborately designed Baroque memorials. The monumental tomb of Baldwin of Luxembourg stands in the western choir. As Archbishop of Trier and brother of Emperor Henry VII, Baldwin was one of the most influential ecclesiastical princes in the empire during the 14th century. The raised black-marble tomb was probably intended to feature a reclining figure of Baldwin, along with additional sculptures and coats of arms. However, the decoration was never completed.
The Gothic Cloister: A Gothic cloister dating from the 13th century extends between Trier Cathedral and the Church of Our Lady. Pointed arches, slender columns and richly decorated capitals define its appearance. Numerous grave slabs and monuments commemorate members of the clergy who were closely associated with Trier Cathedral. The landscaped courtyard continues to serve as a burial place for members of the cathedral chapter.
Hidden Computer Mouse: In the western wing of the cloister, south of the auxiliary bishop’s chapel, a capital faces the inner courtyard. It is decorated with ivy leaves and several small mice. Hidden deep among the stone foliage is a modern computer mouse that can only be recognised at very close range. It was probably added as a humorous detail during the restoration carried out between 2009 and 2014.
The Malberg Madonna: This Late Gothic figure of the Virgin Mary was created during the second half of the 15th century for the tomb of Edmund von Malberg, a canon of Trier Cathedral. Mary wears a crown and stands on a crescent moon. The infant Jesus holds an apple as a symbol of redemption. The natural movement of the figures and the skilfully carved folds of their robes make the statue an important work of Late Gothic sculpture. A cast is now displayed in the cloister, while the fragile original is preserved in the Museum am Dom.
Famous Photo Spot: In the eastern wing of the cloister, the Gothic arcades frame a particularly beautiful view of Trier Cathedral and the neighbouring Church of Our Lady. The view became famous after Konrad Adenauer visited the site on 30 June 1966 and expressed his admiration for the interplay between the historic buildings. The scene brings together architecture from several centuries and vividly reveals the long history of the cathedral complex. Since then, the viewpoint has been known as the Adenauer View.
Cathedral Treasury: Above the cloister of Trier Cathedral is a treasury containing important works of art from Late Antiquity, the Middle Ages and later periods. Its outstanding exhibits include the Portable Altar of St Andrew, the Reliquary of the Holy Nail and the ivory panel depicting a relic procession. Many of these precious objects were created as containers for venerated relics. Gold, silver, gemstones, pearls, ivory and enamel reflect their considerable religious and artistic value. The relics themselves usually remain hidden, but their elaborately decorated containers can be viewed for an admission fee. The treasury of Trier Cathedral was once considerably larger than the collection displayed today. In 1792, 399 kilograms of precious metal were melted down to help finance the war against the French revolutionary forces. Only 12 older works of treasury art survived this loss. The collection was expanded again during the 19th and 20th centuries.
Portable Reliquary Altar: The Portable Altar of St Andrew is a richly decorated casket that served both as a reliquary and as a transportable altar. Inside is a sole believed to have belonged to a sandal worn by the Apostle Andrew. A golden foot on the lid refers to this relic. However, visitors are not normally able to see the sole itself. The artwork is displayed in the Cathedral Treasury and can be viewed during regular opening hours for an admission fee.
Shrine for the Holy Nail: The reliquary contains an iron nail venerated as one of the nails from the cross of Jesus. The richly decorated container was created in the late 10th century. Its narrow shaft and hinged head reproduce the shape of the nail. The reliquary was formerly kept inside the Portable Altar of St Andrew and used during processions, public displays of relics and ceremonial oaths. Today, it is exhibited in the Cathedral Treasury. The nail’s true origin cannot be historically verified.
Ivory Panel Depicting the Relic Procession: Measuring approximately 13 by 26 centimetres, the ivory panel depicts a ceremonial relic procession in deeply carved relief. Two members of the clergy hold a small shrine on a cart. Candle bearers, an empress and numerous onlookers accompany the procession. The artwork was probably created in Constantinople during the 5th century and may once have formed part of a reliquary. The panel has belonged to the treasury of Trier Cathedral since 1844. The event it depicts and the identity of the relic once held in the illustrated shrine remain unknown.
Trier Cathedral by Touch: A bronze model on Domfreihof square shows Trier Cathedral and the neighbouring Church of Our Lady at a scale of 1:200. Visitors can examine the towers, roofs and arrangement of the two churches visually or explore them by touch. The model gives blind and visually impaired people in particular a clear impression of the form and layout of the architectural ensemble.
Excavation Area: Beneath the Cathedral Information Centre, a narrow walkway leads through an exposed archaeological excavation. From there, visitors can see ancient walls, column bases, parts of an apse and the remains of a Roman underfloor heating system. The layers of structures clearly show how new buildings were repeatedly constructed on the site over the centuries and how older elements continued to be reused. The excavation can only be visited as part of a guided tour.
Museum am Dom: The Museum am Dom presents Christian art and archaeological discoveries spanning almost 1,700 years. It is located directly beside Trier Cathedral in a former 19th-century Prussian prison. Its best-known exhibit is a Late Antique ceiling painting from a luxurious Roman residence. The remains were discovered more than 3 metres beneath Trier Cathedral and reconstructed from over 30,000 painted fragments. The surviving scenes, featuring life-sized figures, winged gods of love, and Eros and Psyche, reveal the splendour with which wealthy Romans decorated their homes. Alongside the ceiling painting, the museum displays Early Christian funerary inscriptions, medieval sculptures and Christian artworks from many different centuries. Its collection also includes Russian and Greek icons and archaeological finds that tell the story of the beginnings of Christianity and the construction history of Trier Cathedral.
UNESCO World Heritage Site: Trier Cathedral has been part of the UNESCO World Heritage List since 1986. Together with the Church of Our Lady and Trier’s Roman monuments, it forms part of an exceptional World Heritage Site.
