Nantes never lets its past sit still. A biscuit factory became an arts venue, the old shipyards now build a giant mechanical elephant, and a medieval castle guards a city that turned its darkest history into one of Europe's most powerful memorials. This self-guided walking tour traces that constant reinvention through the city's essential sights. Everything runs from your phone. You get a clear map of all 8 stops, simple directions through Google Maps, and a short audio story with an interactive quiz at each location. The route runs from the landmark LU tower to the mechanical elephant of Les Machines de l'Île, passing the Château des ducs de Bretagne, the Gothic cathedral, the glass-roofed Passage Pommeraye, and the Memorial to the Abolition of Slavery on the Loire. Start anytime, pause whenever you like, and explore freely. No groups, no schedules. Audio and text available in 7 languages. And it comes with a free eSIM, redeemable once per account, so your map, directions and audio work from the moment you arrive, with no roaming charges.