Cologne Cathedral - Wikipedia

On September 4, 1842, work on The Cologne Cathedral recommences after a 284-year hiatus. From the article:

"Ancient site
When construction began on the present Cologne Cathedral in 1248, the site had already been occupied by several previous structures. The earliest may have been for grain storage, and possibly was succeeded by a Roman temple built by Mercurius Augustus. From the 4th century on, however, the site was occupied by Christian buildings, including a square edifice known as the "oldest cathedral" that was commissioned by Maternus, the first bishop of Cologne. A free-standing baptistery dating back to the 7th century was located at the east end of the present cathedral but was demolished in the 9th century to build the second cathedral. During excavations of the present cathedral, graves were discovered in the location of the oldest portion of the building; including that of a boy that was richly adorned with grave goods and another of a woman, popularly thought to be Wisigard. Both graves are thought to be from the 6th century. Only ruins of the baptistery and the octagonal baptismal font remain today.[citation needed] The second church, called the "Old Cathedral", was completed in 818. It was destroyed by fire on 30 April 1248, during demolition work to prepare for a new cathedral.[8]

Medieval beginning
Old photo of the cathedral before completion shows the east end finished and roofed, while other parts of the building are in various stages of construction.

In 1164, the Archbishop of Cologne, Rainald of Dassel, acquired the relics of the Three Kings which the Holy Roman Emperor, Frederick Barbarossa, had taken from the Basilica of Sant'Eustorgio, Milan, Italy. (Parts of the relics have since been returned to Milan.) The relics have great religious significance and drew pilgrims from all over Christendom. It was important to church officials that they be properly housed, and thus began a building program in the new style of Gothic architecture, based in particular on the French cathedral of Amiens.[citation needed]

The foundation stone was laid on 15 August 1248,[9] by Archbishop Konrad von Hochstaden. The eastern arm was completed under the direction of Master Gerhard, was consecrated in 1322 and sealed off by a temporary wall so it could be in use as the work proceeded. Eighty four misericords in the choir date from this building phase. In the mid 14th century work on the west front commenced under Master Michael. This work halted in 1473, leaving the south tower complete up to the belfry level and crowned with a huge crane that remained in place as a landmark of the Cologne skyline for 400 years.[10]

Some work proceeded intermittently on the structure of the nave between the west front and the eastern arm, but during the 16th century this ceased.[11]

19th century completion
With the 19th century romantic enthusiasm for the Middle Ages, and spurred on by the discovery of the original plan for the façade, it was decided, with the commitment of the Protestant Prussian Court, to complete the cathedral. It was achieved by civic effort; the Central-Dombauverein, founded in 1842, raised two-thirds of the enormous costs, while the Prussian state supplied the remaining third.[citation needed] The state saw this as a way to improve its relations with the large number of Catholic subjects it had gained in 1815.[citation needed]

Work resumed in 1842 to the original design of the surviving medieval plans and drawings, but utilizing more modern construction techniques, including iron roof girders. The nave was completed and the towers were added. The bells were installed in the 1870s. The largest bell is St. Petersglocke.

The completion of Germany's largest cathedral was celebrated as a national event on 14 August 1880, 632 years after construction had begun.[12] The celebration was attended by Emperor Wilhelm I. At 157.38 Meters or 515 feet tall, it was the tallest building in the world for four years until the completion of Washington Monument."