Complex sentence: The Gothic Revival Cathedral styled Church is the largest of the Roman Catholic Churches in the City of Detroit, it was designated a Michigan State Historic Site in 1974 and listed on the National Register of Historic Places in 1978.
Split into simpler sentences: The Gothic Revival Cathedral styled Church is the largest of the Roman Catholic Churches in the City of Detroit. It was designated a Michigan State Historic Site in 1974 and listed on the National Register of Historic Places in 1978.