The nave suffers from a very low ceiling, which was put in without much consideration directly after World War II.
One of Frankfurt's least known and yet most significant works of art is situated on the south side of the church, Madern Gerthener's tympanum. This frieze of round arcading, constructed at the beginning of the 15th century, is now situated behind an 18th-century porch, which serves to protect it from the elements. The terracotta relief depicts the birth of Jesus Christ.
