Le Grand Eléphant (trans. ala Google):
He lives in the streets of central nave. When the animal part in majestic promenade is a real architecture movement that sort of a cathedral of steel. The 49 passengers boarded for a surprise trip to the island of Nantes. Each output of the pachyderm is a unique spectacle offered to everyone.
Travelers are discovering, Interior, gear and feet moving. They can trigger barrissement and control certain movements of the animal and thus become actors in the Machine. Since the back of the elephant, they are like the 4th floor of a house that moves, with a view "impregnable" on the banks of the Loire. In this crew, out of time, they s'inventent another trip and docked in the city of Jules Verne.
Les Machines de l'Ile
The Sultan's Elephant
See it in action (thanks, John)