Complex sentence: A series of round columns, pointed arcade arches and parts of the roof survive from the mediaeval era, although the original box-pews and pulpit were replaced in 1879, when internal restoration work was carried out.
Split into simpler sentences: A series of round columns, pointed arcade arches and parts of the roof survive from the mediaeval era. The box-pews and pulpit were replaced in 1879, when internal restoration work was carried out.