Aachen Cathedral Treasury

The Aachen Cathedral Treasury (German: Aachener Domschatzkammer) is a museum of ecclesiastical art located in the historic inner city of Aachen, Germany. It is operated under the authority of the cathedral chapter of the Roman Catholic Diocese of Aachen and houses one of the most significant collections of medieval church artworks in Europe. In 1978, the Aachen Cathedral Treasury, together with Aachen Cathedral, became the first monument on German soil to be inscribed on the UNESCO World Heritage List. The treasury's holdings span from Late Antique through Carolingian, Ottonian, Staufen, and Gothic periods, reflecting nearly unbroken artistic epochs from the early Middle Ages to the early modern period.

The church treasure itself has existed since at least the 9th century, with the first relics list dating to the 11th century. From the 15th through the 19th centuries, the growing collection was kept in a large Gothic reliquary cabinet in the sacristy of the Matthiaskapelle in Aachen Cathedral. After the devastating city fire of 1656, protective measures including a brick vault and double floor were installed. In the 19th century, this cabinet was dismantled and its painted doors incorporated into a second cabinet, which from 1873 to 1881 stood in the Karlskapelle before being moved to the baroque Ungarnkapelle for better climatic conditions. During the First World War, the treasure was evacuated to Paderborn due to imminent air raids and returned in 1922. Dombaumeister Joseph Buchkremer then selected the Allerseelenkapelle as a secure location, and the first purpose-built treasury chamber opened in 1931 with 90 square meters of exhibition space. In 1975, the Federal Ministry for Spatial Planning selected the Aachen treasure for a pilot protective bunker. The cathedral chapter decided to build a new treasury adjacent to this bunker on the west side of the cloister. Designed by Leo Hugot, Erich Stephany, and Herta Lepie, the new rooms opened in 1979 with 490 square meters across three rooms arranged chronologically. Due to technical deficiencies and unexpectedly high visitor numbers, a complete refurnishing took place in 1995. Herta Lepie led the treasury from 1978 to 1986, then directed goldsmith art at the cathedral until 2003. Georg Minkenberg led from 1994 until his death in March 2016, followed by Birgitta Falk in June 2016. Since 2009, the treasury has been a station on the Route Charlemagne.

The Aachen Cathedral Treasury contains works from Late Antique, Byzantine, Carolingian, Ottonian, Staufen, and Gothic times. Since the 1995 reinstallation, over one hundred artworks have been displayed across more than 600 square meters, organized into thematic groups rather than chronologically. The collection reflects the treasury's original purpose: the furnishing of Charlemagne's Mary Church and the celebration of its liturgy. The six thematic areas are: Charlemagne; the coronations; liturgy; the Mary Church; the pilgrimage church and its relic treasure; and textiles. The presentation ends with Aachen's period as a coronation city in the 16th century, while post-medieval works are planned for future display in the cathedral chapels. The textile collection, stored in rotation in the basement, forms a significant component of the exhibition.

Among the most celebrated objects connected to Charlemagne are the late Gothic silver-gilt Bust of Charlemagne (Karlsbüste), created around 1350 and later serving as a model for countless reliquaries; the 3rd-century Roman marble Persephone Sarcophagus in which Charlemagne was originally buried; the so-called Hunting Knife of Charlemagne, an 8th-century Damascus steel blade classified as Anglo-Saxon or Scandinavian with an 11th-century sheath bearing an Old English inscription; and an 11th-century olifant (elephant tusk horn) from Southern Italy or the East, long considered Charlemagne's hunting horn. The liturgy section features the Cross of Lothair, an Ottonian processional cross from around 1000 still used on special occasions, adorned with gemstones and a 1st-century cameo of Emperor Augustus; the Aachen Altar; the Carolingian Treasury Gospels, a masterpiece of medieval illumination; and works by the late Gothic goldsmith Hans von Reutlingen. Coronation-related holdings include the ivory situla, a holy water vessel made in Trier around 1000, and the Ottonian Liuthar Gospels. The relic and pilgrimage section displays the Hungarian Donations, reliquaries, and images of the Theotokos. The coronation cloak known as the Cappa Leonis (c. 1520), falsely named after Pope Leo III, anchors the textile collection.

The Aachen Cathedral Treasury is housed in premises connected to the cathedral cloisters in the historic center of Aachen. The current exhibition spaces were constructed from 1975 to 1979 on the west side of the cloister, immediately adjacent to a protective bunker built for the treasure. The 1995 reinstallation, designed by Herta Lepie, Georg Minkenberg, August Peters, and Hans-Karl Siebigs with architectural execution by Winfried Wolks, expanded the exhibition area to 600 square meters and introduced additional rooms for temporary exhibitions. The new spatial concept abandoned chronological presentation in favor of thematic compartmentalization, creating distinct spaces that clarify the content relationships between objects. The treasury's physical integration with the cathedral complex underscores its functional and historical connection to the liturgical and ceremonial life of the church.

The Aachen Cathedral Treasury is located at Johannes-Paul-II.-Straße in Aachen, Germany. It is owned by the Roman Catholic Diocese of Aachen and managed by the cathedral chapter. As of the available information, admission is priced at 8.00 euros for adults, 4.00 euros for children and reduced admission, with family ticket options available. The museum offers barrier-free access, accessible toilets, and is suitable for individual guests, groups, and children of all ages. It operates as a weather-independent destination. The treasury maintains its present role as a major cultural institution, having been inscribed as a UNESCO World Heritage Site in 1978 and integrated into the Route Charlemagne since 2009. Its collection continues to attract scholars and visitors interested in medieval ecclesiastical art, imperial history, and the legacy of Charlemagne.