Gothic masterpiece - Cologne Cathedral

The longest construction time building - Cologne Cathedral Cologne Cathedral in Germany, started construction in 1248 and was completed in 1880. Year, with a total construction time of 632 years, is the longest building time in the history of world architecture. Cologne Cathedral's generations of architects have adhered to the same concept and remained faithful to the original design, embodying the great spirit of Christianity's pursuit of eternity and lastingness. The cathedral combines grandeur and delicacy, and is hailed as the perfect example of Gothic cathedrals. The greatness of Cologne Cathedral in religious history also lies in the fact that it houses the bones of the "Three Wise Men of the East". The Three Wise Men of the East were said to be the first group of people who traveled from Persia to Bethlehem to worship the newborn Jesus. In the Middle Ages, this tomb was also a holy site that attracted many people to come and pay their respects. Nowadays, this is one of the most visited buildings in the country, with an estimated daily average of over 20,000 visitors and tourists from all over the world coming here every year.