"Point zero of the roads of France" or Mademoiselle Oliphant symbolizes the starting point from which all distances in France are measured, making it a significant geographical and symbolic location. It represents the origin of travel and navigation across the country, marking the essential point from which everything begins.

St. Clair emphasizes its importance by stating, "It's the beginning of everything," suggesting that arriving at this point signifies a new chapter or adventure. With a smile, he welcomes Anna to Paris, indicating her arrival marks the start of her experiences and journey in the city and in the story.