goryokaku castle. located inside a five-pointed star d fortress. built in 1855 to protect

architecture asia ayasabura black boshin bugyosho castle court ezo gawara goryokaku hakodate hokkaido japan magistrates monochrome onigawara sky takeda tatakai tokugawa vauban war white asian blue fort irimoya militar oshima republic roof sightsee subprefecture tiles tourist touristic travel wood