The Venetian arsenal at Gouvia was a shipyard built by the Republic of Venice during their rule over the island of Corfu. It was located on the west side of what used to be called 'Govino Bay', the current location of the modern village of Gouvia.
The arsenal was built in 1716 as part of defenses against the Ottomans. It was abandoned by the Venetians in 1798, when the Venetian Republic ceased to exist.
References: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.