Karlovy Vary is a resort town squeezed into a narrow river gorge, where for three centuries European royalty, composers and hypochondriacs came to drink boiling mineral water from ornate colonnades. This self-guided walking tour traces that aristocratic ritual through the town's UNESCO-listed spa architecture, from grand hotel facades to the wooden and cast-iron galleries built to tame a geyser. 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 Grandhotel Pupp past the emperor's bathhouse and the equestrian statue of the town's legendary founder, up to St Mary Magdalene's baroque dome and down to the boiling Vřídlo geyser, through the market arcades and up to the solitary tower above the gorge, before finishing beneath the grand Mill Colonnade. 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.