abbey church is characterized by two architectural styles.
On the one hand, the nave and the transept, dating from
Roman times, on the other hand the choir and chapels high
during the Gothic period. The nave, built in part on the
Carolingian abbey church dates from the 11th century. It
will be reduced by three bays in the 18th century. See the
dates of construction of the abbey of Mont Saint Michel.
choir, true masterpiece of Gothic art, was brought following
the collapse of the Romanesque choir in 1421. The construction
work will last a century and will be completed in 1521.
The keystones are beautifully armoiriées (see below).