Complex sentence: On a commanding hilltop position, Richard Cassels deviated slightly from his usual sombre style, to give the house something of what John Vanbrugh would have called the'castle air'; a severe palladian facade bookended by two circular domed towers.
Split into simpler sentences: On a commanding hilltop position, Richard Cassels deviated slightly from his usual sombre style, giving the house something of what John Vanbrugh would have called the'castle air.' This is most noticeable in the structure's severe palladian facade bookended by two circular domed towers.