The Oiselinière estate was, before the French Revolution a 'Seigniory'. It is mentioned as early as 1335 in the charter 'Les Actes'. It spreads over the districts of Gorges and Clisson, and under the feudal system depended on the Seigneurs of Clisson and Pallet. For 643 years, this Seigniory only changed families four times: Maurice le Meigen was the owner, then in 1460 one of this descendants through allegiance, Claude Grézeau took over. His family sold the seigniory of the Oiselinière to Jean Goulet de la Fosse de Nantes in 1613. Louis de la Bourdonnaye acquired the property in 1658. Then in 1767, the seigniory was sold to the ancestors of the Aulanier family (This family made a great contribution in the Second World War, Oselinière being a hotbed of resistance).
The castle is a villa built in Italian style between 1822 and 1835 to enclose a square courtyard dated from the 17th century. The villa, the outbuildings, the orangery and the gallery of 'Les Illustres' are included in the inventory of historical monuments since 1997 and are cited as reference in the inventory 'Clisson or return to Italy.'
To the west of the villa, near the orangery stands a set of architectural interest with six niches on its main facade which are made of circular brick and adorned with busts of famous men. From left to right, we can recognize Olivier de Clisson, Conde, Duquesne, Jean Bart, and Bayard Duguesclin.
Goryōkaku (五稜郭) (literally, 'five-point fort') is a star fort in the Japanese city of Hakodate on the island of Hokkaido. The fortress was completed in 1866. It was the main fortress of the short-lived Republic of Ezo.
Goryōkaku was designed in 1855 by Takeda Ayasaburō and Jules Brunet. Their plans was based on the work of the French architect Vauban. The fortress was completed in 1866, two years before the collapse of the Tokugawa Shogunate. It is shaped like a five-pointed star. This allowed for greater numbers of gun emplacements on its walls than a traditional Japanese fortress, and reduced the number of blind spots where a cannon could not fire.
The fort was built by the Tokugawa shogunate to protect the Tsugaru Strait against a possible invasion by the Meiji government.
Goryōkaku is famous as the site of the last battle of the Boshin War.