Among the remains of the Solin buildings, of particular interest is the complex known as Gradina (Hill-Fort), next to the very river and the Roman town’s eastern walls. A church of an unusual ground plan, built over the Roman époque remains, is today situated within a medieval fortress. This was built, according to some authors, by the Split archbishop Ugolino de Mala Branca (1349-1388) to protect the people of Split from the people of Klis. Today, it is in a fortress built during the Venetian-Turkish wars, in the 16th century.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.