For us, Mont-St-Michel had it's strongest impact as a vision in the distance. We first glimpsed it across a field next to the road. It looked like an immense statue on the horizon. (Please click.)
That evening, it was visible over the marshy pastures across the road from our motel.
When we finally took a bus out the causeway to see it, it revealed itself to be a 17th century French town. It was not as magical up close.
We preferred the distant vision. I'm not sure what the sheep thought.