Habsburg Castle near the Aare River was the original seat of the House of Habsburg, which became one of the leading imperial and royal dynasties in Europe. At the time of its construction, the location was part of the Duchy of Swabia.
Around 1020–1030 Count Radbot, of the nearby county of Klettgau in the Duchy of Swabia, had the castle erected. It is believed that he named the castle after a hawk (Habicht) seen sitting on its walls. Radbot's grandson, Otto II, was the first to take the Habsburg Castle name as his own, adding 'von Habsburg' to his title and creating the House of Habsburg.
Habsburg Castle's importance diminished after Radbot's seventh generation descendant Rudolph moved the family's power base to Austria in 1276. Habsburg Castle remained property of the House of Habsburg until 1415, when Duke Frederick IV of Austria lost the canton of Aargau to the Swiss Confederacy.
The original coat of arms to fly over Habsburg Castle, a red lion on a golden field, remained part of the Austrian arms up to the end of the imperial period. The modern arms of the municipality of Habsburg, Switzerland, depict Habsburg Castle.
The area around the castle was covered by forests that were only cleared around 1500, nearly half a millennium after Habsburg Castle was first constructed.
Today the large and small towers of the original castle are preserved, attached to a residential building of the 13th century, while large parts of the complex lie in ruins. The extent of its eastern part is recognizable only by foundation walls. The palatial residence hosts a restaurant and a small exhibition.
References:The Château de Foix dominates the town of Foix. An important tourist site, it is known as a centre of the Cathars. Built on an older 7th-century fortification, the castle is known from 987. In 1002, it was mentioned in the will of Roger I, Count of Carcassonne, who bequeathed the fortress to his youngest child, Bernard. In effect, the family ruling over the region were installed here which allowed them to control access to the upper Ariège valley and to keep surveillance from this strategic point over the lower land, protected behind impregnable walls.
In 1034, the castle became capital of the County of Foix and played a decisive role in medieval military history. During the two following centuries, the castle was home to Counts with shining personalities who became the soul of the Occitan resistance during the crusade against the Albigensians.