The nave is flanked with the usual aisles, which in turn are abutted with ten chapels on either side.
Just within the left portal is preserved the old bourdon called la Non-Pareille, a curiosity which seems in questionable taste for inclusion within a cathedral.
The rose window of the portal shows in the interior with considerable effect, though it is of not great elegance or magnificence of itself.
In the Chapelle des Catechismes, immediately beneath the tower, is an unusual "Assumption." As a work of art its rank is not high, and its artist is unknown, but in its conception it is unique and wonderful.
There are some excellent wood-carvings in the Chapelle du Baptistère, a description which applies as well to the stalls of the choir.
Around the sanctuary hang seven tapestries, ancient, it is said, but of no great beauty in themselves.
In a chapel on the north side of the choir is a "miraculous statue" of la Vierge Noir.
The organ buffet dates from 1640, and is of the ridiculous overpowering bulk of most works of its class.
The bishopric, founded by St. Sévérein in the third century at Civitas Gabalorum, was reëstablished at Mende in the year 1000.
The Ermitage de St. Privat, the holy shrine of the former habitation of the holy man whose name it bears, is situated a few kilometres away on the side of Mont Mimat. It is a favourite place of pilgrimage, and from the platform of the chapel is to be had a fine view of the city and its cathedral.