Complex sentence: St John's College is perhaps the grandest Gothic Revival building in New South Wales and designed by one of England's (and Australia's) foremost ecclesiastical architects of the mid- 19th century is unique in Sydney collegiate architecture in its combination of scale quality and construction.
Split into simpler sentences: St John's College is perhaps the grandest Gothic Revival building in New South Wales. Designed by one of England's (and Australia's) foremost ecclesiastical architects of the mid- 19th century, it is unique in Sydney collegiate architecture in its combination of scale, quality and construction.