 At the beginning of the 19th century Archduke Maximilian D Este gave order to build a fortification around the city of Linz. This stronghold was disused a few years after its completion without facing any battles. In later years, a part of the construction got a whole different honor. The fort on top of the Pöstlingberg which surrounds a basilica was reopened and accommodates two of Upper Austrias biggest tourist attractions. The mountain station of the world s most precipitous adhesions railway the Pöstlingbergbahn and the enchanting fairy tale world of the Grottenbahn. This documentary takes a close look at the history of the Pöstlingberg and sheds new light at the Grottenbahn, which celebrated its 100th birthday in 2006.