
Arnaud's successor completed the transept and the towers and built the aisles in the nave in the romanesque style. The building was completed by another bishop…

The building was restored: the upper part of the nave was rebuilt in gothic style (with a vaulted roof) while the basis of the nave remained romanesque.

In 1220 the apse was deemed to dark and narrow. Construction of a new apse began, leading to the extension of the cathedral atop the old city wall. The new…

This caused aesthetic heterogeneity and it was decided to also raise the transept and the nave by 10m. The raising of the south transept was completed in 1392…
In 1056 the new Le Mans bishop had the older Carolingian…