In the fifteenth and sixteenth century, simple masonry churches with a nave and two aisles were built in a regional variant of the late-Gothic style throughout the Campine. Judging from the drawings, the church in Erp shares many characteristics of this Campine Gothic style, which appears in a sense rural without its use of the elaborate Gothic decorations as seen in northern France. The most characteristic element of these Campine Gothic churches is the monumental brick bell tower or steeple with heavy-set diagonal buttresses on all four corners, examples of which can still be found throughout the region.