Hainburg Castle, also known as Heimenburg, was built by Henry III the Holy Roman Emperor around 1050 to protect the traffic in Danube. It was enlarged in the mid-13th century. The castle was besieged in 1619-1620 by Hungarian army and conquered in 1683 by Ottomans.
After the new residence was built in 1742 the old castle was left to decay. Today Hainburg castle can freely be visited. A nice castle ruin, giving great views over the medieval town below and the surrounding countryside.
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.