Street's design followed the form of the Gothic choir.

The polygonal apse was replaced in the 14th century (1327-1340) by an early Gothic choir with three bays.

The Early Gothic choir is of the twelfth and thirteenth centuries.

The 13th-century Gothic choir was incorporated into it.

The present building, with a late-Romanesque nave and Gothic choir, was built between 1310-30.

The nave dates from 1110; it is lower than the Gothic choir and still has its original fenestration (337).

The Gothic choir, erected between 1300 and 1500, was extraordinarily large.

In the 15th century a Gothic choir was added to the Romanesque nave.

In the 13th century the chapel was extended by the addition of an early Gothic choir.

The Gothic choir and the bell tower are from the 15th century while the nave is from the 16th.