Karpacz is one of the most popular resorts in the Karkonosze Mountains – set at the foot of Śnieżka, full of historic sites, viewpoints and mountain attractions. The most comfortable way to discover it is to take a seat on the tourist train and let the route unfold before your eyes. For the train operator, we developed an app that plays commentary for passengers during the ride. The recordings tell the story of the places along the way, the town's history and its most interesting corners, and they start automatically thanks to GPS positioning – exactly when the train reaches the next point on the route. Passengers can simply sit back and listen.