The twin towers rise 99 m (325 ft), making the church the second-tallest in
Vienna after
St. Stephen's Cathedral, and the overall plan consciously echoes a French cathedral. Outside, the facades and towers do the big-city drama; inside, the stained glass, memorial windows, and long view through the nave make the scale feel unexpectedly complete. This is why even a short stop can feel more cathedral-like than parish-church-like.