Aarhus is a city that never stops rewriting itself. It buried its founding Viking river under concrete for cars, then dug it back up as a riverside promenade; it moved an entire old town building by building to save it; and it hung a walkable rainbow over the skyline. This self-guided walking tour traces that constant reinvention through the essential sights of Denmark's second city. Everything runs from your phone. You get a clear map of all 10 stops, simple directions through Google Maps, and a short audio story with an interactive quiz at each location. The route runs from the Dokk1 harbourfront to the open-air old town of Den Gamle By, passing the reopened river at Åboulevarden, Denmark's longest cathedral, the Latin Quarter, the famous "Smiling Sun" anti-nuclear mural, and the ARoS art museum with Olafur Eliasson's rainbow panorama. 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.