On the top of the Schlossberg, which separates the Val de Villé from the Val d'Argent, Frankenburg Castle was built on a former Roman castle, the castle rises to a height of 703 metres and is surrounded on all sides by the forest. From this summit you can see the Alsace plain.
The castle dominates the entrance to the Sainte-Marie-aux-Mines valley, which ends in Lorraine and which, in the Middle Ages, was of strategic and economic interest. The rare food salt of the Middle Ages passing through this valley.
This castle is officially mentioned for the first time in 1123
The castle was destroyed by a fire caused by lightning in 1582. It was classified as a historic monument in its entirety on December 6, 1896.