The Grottenbahn is a unique underground railway that turns a visit to an old fort into a real fairytale adventure. Located in the Beatrix Tower at the top of Mount Pöstlingberg, this attraction is one of the most popular family-friendly sites Linz has to offer.

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The main feature of the place is a dragon-shaped train that carries visitors through the winding tunnels and casemates of former fortifications. Inside, guests are greeted by brightly lit scenes from popular fairytales and a world of dwarves, all created within the historical walls of the 1830s fort. This wonderful blend of military history and childhood fantasy makes it a landmark for a region like Austria.
Perched high up, the Grottenbahn offers not only underground secrets but also the chance to enjoy panoramic views of the Danube River valley. Thanks to its originality and accessibility, this place is highly rated by travelers and is considered an ideal starting point for exploring the cultural heritage of Pöstlingberg.