This abbey church, built in the 12 and 13C, is as large as a cathedral and contains many works of art. Beneath the right-hand transept is the late 15C Dormition of the Virgin; inside the chapels are magnificent sculpted partitions and the tomb of Abbot Thomas de Saint-Benoît, who died in 1307. The Chapel of the Virgin, an independent ensemble in flamboyant style, has fine 13C stained-glass windows. Opposite the chapel is the white marble tabernacle of the Precious Blood.