In the centre room there is an impressive sexpartite vault supported by two piers.

Sexpartite vaults are used to span the nave.

Some ribbed vaults even have six sections in each bay (for example, the sexpartite vault, formed by the intersection of three half "barrels").

The vaults were six ribbed sexpartite vaults.

The use of sexpartite vaults allowed for more natural light to enter the cathedral through the clerestory windows, which were placed inside of each separate bay.

The sexpartite vault, which is a 19th-century restoration, is supported by clusters of three shafts which spring from energetic figurative corbels.

Sexpartite vault, in architecture, is a rib vault divided into six bays by two diagonal ribs and three transverse ribs.

The French then developed a sexpartite vault, wherein the intermediate pier is carried up as a vaulting shaft to carry a rib which transfers the vaulting compartment into six.

These vaults were quadripartite, each bay split into four webs by two diagonally crossing ribs, unlike the sexpartite vaults adopted in many earlier Gothic cathedrals such as at Laon.

Internally, the nave has a three-part elevation (arcade, gallery and triforium), topped by a typical early-Gothic sexpartite vault, the vault responds resting on alternating compound and columnar piers.