The Cathedral of Notre Dame in tlasburg, sitting in the heart of the old city, is not only a very famous gothic architectural style cathedral in europe, but also one of the most important medieval historical buildings in europe. It is a pity that I was a little late to get here and I couldn't walk into the cathedral. The Cathedral of Notre Dame was built in 1176 and was not completed until 1439. The church was completely built from the pink sandstone of the Sunrise Mountain in northwest Strasbourg. On the front is a 142-meter-high minarets, which the famous French writer Hugo once described as "a huge and slim building".