As you face the harmoniously asymmetrical western facade, the southern tower, the Clocher Vieux, is a prime example of Roman?­esque simplicity, whereas the taller northern tower, the Clocher Neuf, is already lighter, with its slender, more ornate steeple.
The Clocher Neuf is taller than the Clocher Vieux.
The southern tower is taller than the northern tower.