The construction of the cathedral began in the early 13C but was only finished in the 16C. The magnificent Flamboyant façade overlooking Parvis square is from 1460-96. Inside, there are traces of the Gothic style from the Champagne region and a beautiful 36m-high nave. Note the 1503 stained-glass windows, the organ and numerous tombstones on the floor. The 13C-14C cloister comprises three galleries; several gargoyles adorn the buttresses that divide the bays.