The church is in the ‘old town’, not the fishing port or seaside resort. It is about one mile from the sea and the harbour. It is a large Gothic building although this is merely ten bays of the nave of the medieval priory church. To the W is the late medieval gatehouse of the priory, now the Bayle museum (Pevsner & Neave 1995, 342-6).
Nothing remains standing of the 12thc church; for the priory at that time see Franklin 1983. However, there are the reconstructed remains of what is almost certainly arcading from the cloister of that period. The reconstruction is in two sections, of two bays and three. See Bilson 1910-12, 1913; Franklin 1983, 45; Thurlby 1983; Harrison 2006, 111-116. Additionally to the cloister arcade, further loose capitals of the same types have been fixed on the plinth or wall between the bays.
The two sections of reconstructed arcading are in the N aisle at the W end. In this report, they are called Arcade A and Arcade B, as in Thurlby 1983. Franklin 1983, 46, points out that the plainer face of the arcades would have been the outside face, facing onto the open centre of the cloister. The view offered to the visitor is that from the cloister walk, but both sides can be seen. The arcades and capitals are described and numbered from L to R, seen from that side.
There is also much loose sculpture probably from the same source, and a well-preserved tomb-slab in Tournai stone.