Church of Saint-Sulpice

The Church of Saint-Sulpice in Paris appears in Jules Verne's narrative as a real-world benchmark for the colossal scale of the natural wonders Captain Nemo has collected. When Professor Aronnax first enters the Nautilus's main lounge, he is astonished by a basin made from a single giant clam shell, measuring about six meters in circumference. To convey its extraordinary size, Aronnax compares it directly to the giant clam shells given to King François I by the Republic of Venice, which the Church of Saint-Sulpice in Paris has made into two gigantic holy-water fonts. This comparison grounds the fantastic dimensions of the Nautilus's treasures in a tangible, famous landmark, allowing the reader to grasp the shell's magnitude through a known architectural and religious artifact. The mention of the church thus serves as a bridge between the fictional underwater world and the familiar cultural geography of Paris, reinforcing the authenticity of Aronnax's observations and the sheer scale of Captain Nemo's collection.