Sankt Gereon

St. Gereon in Cologne's Altstadt-Nord (Old Town North) is one of the city's twelve great Romanesque churches and a unique witness to architectural history. At the core of the building, substantial remains of an oval central-plan structure from the second half of the 4th century have survived. Built on one of the city's oldest burial grounds, this late-antique oval building is considered one of the most significant examples of ancient monumental architecture north of the Alps. Its construction, composed of individual circular segments, mediates between a longitudinal and a central plan and is regarded as a brilliant anticipation of later Baroque forms. The building probably originally served as a mausoleum for high-ranking figures before being converted into a church in the 5th or 6th century. In the Merovingian period, St. Gereon was the most important Frankish royal church in the eastern part of the realm.

In the early 13th century, the early Christian oval building was reshaped into a ten-sided structure, the so-called decagon, raised in height and topped with a dome. This Hohenstaufen-era remodeling makes St. Gereon the largest surviving freely vaulted central-plan building of the Middle Ages north of the Alps. Architecturally, the decagon combines Romanesque and Gothic elements, and its use of flying buttresses makes it the oldest Gothic structure in Germany. Today, you will find an interior shaped by the colorful window cycles by Georg Meistermann and Wilhelm Buschulte, as well as the orange-red, gilded painting of the dome. This modern design is based on an iconographic concept that takes up the early Christian name for the church as the place of the "Golden Saints."

Besides the imposing central-plan building, the church offers other areas well worth seeing, such as the crypt with its Romanesque mosaic floors and frescoes, and the Gothic sacristy. Relics and historical objects are also on display here, including an Isis votive stone that helped date the ancient structure. The legend of Saint Gereon and the martyrs of the Theban Legion, who are said to be buried here, continues to shape the history of the site today. As a basilica minor and a place of active worship, St. Gereon unites the treasures of late antiquity, the Middle Ages, and the modern era into an architectural masterpiece of exceptional significance.