History of Finland between 150000 BC - 4001 BC
If confirmed, the oldest archeological site in Finland would be the Wolf Cave in Kristinestad, in Ostrobothnia. Excavations are currently underway, and if the so far presented estimates hold true, the site would be the only pre-glacial (Neanderthal) site so far discovered in the Nordic Countries, and it is approximately 125,000 years old.
The last ice age in the area of the modern-day Finland ended c. 9000 BCE. Starting about that time, people migrated to the area of Finland from the Kunda and - possibly - Swiderian cultures, and they are believed to be ancestors of today's Finnish and Sami people in Finland. The oldest confirmed evidence of the post-glacial human settlements in Finland are from the area of Ristola in Lahti and from Orimattila, from c. 8900 BCE. Finland has been continuously inhabited at least since the end of the last ice age, up to date.
The earliest post-glacial inhabitants of the present-day area of Finland were probably mainly seasonal hunter-gatherers. Their artifacts discovered are known to represent the Suomusjärvi and the Kunda cultures. Among finds is the net of Antrea, the oldest fishing net known ever to have been excavated (calibrated carbon dating: c. 8300 BCE).
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.