Notre Dame Cathedral boasts five naves and was built in 13C (the porch-bell tower in the late 12C). It houses, in the chancel, a 14m-high, Flamboyant Gothic sculpted stone ciborium. From the 4C, along with the Église Ste-Hugues and the baptistery (destroyed in the 11C) it constituted the episcopal group, and its medieval appearance has been recently restored.