The Cathedral of Our Lady is the largest church in Switzerland and a symbol of the image of Lausanne. The Cathedral of the Notre Dame, built for the King Rudolph of the Habs family who ruled the Roman Empire, was built in the mid 12th century and took more than 80 years to complete in 1232. At the end of the 13th century, Pope Gregory V used to The bishop was established here, and since the 16th century, it has gradually become a Protestant church. The overall structure of the church is well preserved and is considered to be the most beautiful and luxurious church in Switzerland. On the main entrance of the church is a statue in the 13th century with the theme of the saint Moses John in the Bible. Although many colors have been mottled, the degree of sophistication is still amazing. Now a glass box has been specially built to protect it. The interior of the church is solemn, and many of the pillars have medieval paintings. The most famous one is Rose Window, which is 9 meters in diameter. The painting on the window is also based on the cosmic image formed by different seasons and months. As the theme, the mysterious and exquisite, beautiful. We don't understand the religions of the West, just simply wander around the church and admire the unique architectural design of the church. After I came back, I realized that this church could climb to the bell tower and overlook the entire city of Lausanne. Hanging around in the old town around the church is also a pleasant thing.