Ochsenhausen Abbey was a Benedictine monastery was founded according a legend in the 9th century when there was a nunnery here called 'Hohenhusen', which was abandoned at the time of the Hungarian invasions in the early 10th century. A ploughing ox later turned up a chest of valuables buried by the nuns before their flight, and the monastery of Ochsenhausen was founded on that spot.
The first Abbey Church of Ochsenhausen was in fact dedicated in 1093. The monastery was initially a priory of St. Blaise's Abbey in the Black Forest, but gained the status of an independent abbey in 1391. In 1495 it became Reichsfrei (territorially independent).
The abbey was secularised in 1803 and in 1806 its territories were absorbed into the Kingdom of Württemberg.
Much of the buildings still survive. They were extensively refurbished in the Baroque style. The Baden-Württemberg State Youth Music Academy is accommodated in part of them. The former abbey church is now the parish church of St. George's.References:
The Château d'Olhain is probably the most famous castle of the Artois region. It is located in the middle of a lake which reflects its picturesque towers and curtain walls. It was also a major stronghold for the Artois in medieval times and testimony to the power of the Olhain family, first mentioned from the 12th century.
The existence of the castle was known early in the 13th century, but the present construction is largely the work of Jean de Nielles, who married Marie d’Olhain at the end of the 15th century.
The marriage of Alix Nielles to Jean de Berghes, Grand Veneur de France (master of hounds) to the King, meant the castle passed to this family, who kept it for more than 450 years. Once confiscated by Charles Quint, it suffered during the wars that ravaged the Artois. Besieged in 1641 by the French, it was partly demolished by the Spaniards in 1654, and finally blown-up and taken by the Dutch in 1710. Restored in 1830, it was abandoned after 1870, and sold by the last Prince of Berghes in 1900. There is also evidence that one of the castles occupants was related to Charles de Batz-Castelmore d'Artagnan, the person Alexandre Dumas based his Three Musketeers charictor d'Artagnan on.
During the World War I and World War II, the castle was requisitioned first by French troops, then Canadian and British soldiers. The current owner has restored the castle to its former glory.