The Dorneck ruin is located in Dornach in the canton of Solothurn in northwestern Switzerland. It stands on a large rocky ridge east of the village of Dornach, between the valley and the slopes of the Gempenplateau. When chossing this location with its steep slopes, the access from the east, south and west becomes more difficult: As suggested, the only access to the facility is from the north from the direction of the castle courtyard.
In the castle you will find the courtyard (now a restaurant), the asset of the Dorneck fortress, which was created as part of the construction. Both from the ruins and the castle you will find magnificent view over the region.
for more information, unfortunately only in German :( - http://de.wikipedia.org/wiki/Ruine_Dorneck