The Château de Brissac is a noble mansion originally built as a castle by the Counts of Anjou in the 11th century. After the victory over the English by Philip II of France, he gave the property to Guillaume des Roches. In the 15th century, the structure was rebuilt by Pierre de Brézé, a wealthy chief minister to King Charles VII. During the reign (1515–47) of Francis I, the property was acquired by René de Cossé, who the king named as governor of Anjou and Maine.
During the French Wars of Religion, Château Brissac was made a possession in 1589 by the Protestant, Henry of Navarre. Severely damaged, the fortress was scheduled to be demolished. However, Charles II de Cossé sided with Henri of Navarre who soon was crowned King of France. In gratitude, King Henry gave him the property, the title Duc de Brissac and the money to rebuild the chateau in 1611. Its construction made it the highest château in France, its façade reflecting the influences of that century’s Baroque architecture. Through marriage, the Cossé-Brissac family also acquired the Château Montreuil-Bellay but later sold it.
In August 1620, Louis XIII and his mother, Marie de Medici, met to discuss their differences in the "neutral" territory of Château Brissac. A temporary truce between the two was reached but it did not last long and the Queen Mother was eventually banished.
The descendants of the Duc de Brissac maintained the château until 1792 when the property was ransacked during the Revolution. It lay in waste until a restoration program began in 1844 that was carried on during the 19th century by the Duke's descendants.
Today, the Château Brissac is still owned by a de Cossé family member. It has seven storeys altogether, making it the tallest chateau in the Loire Valley. The chateau is open to tours and its luxurious gilded theater hosts the annual Val de Loire festival. It was also used as a location for Brazilian celebrity magazine "Caras" until recently.References:
First record of Kastelholma (or Kastelholm) castle is from the year 1388 in the contract of Queen Margaret I of Denmark, where a large portion of the inheritance of Bo Jonsson Grip was given to the queen. The heyday of the castle was in the 15th and 16th centuries when it was administrated by Danish and Swedish kings and stewards of the realms. Kastelhoma was expanded and enhanced several times.
In the end of 16th century castle was owned by the previous queen Catherine Jagellon (Stenbock), an enemy of the King of Sweden Eric XIV. King Eric conquered Kastelholma in 1599 and all defending officers were taken to Turku and executed. The castle was damaged under the siege and it took 30 years to renovate it.
In 1634 Åland was joined with the County of Åbo and Björneborg and Kastelholma lost its administrative status.