Osaka Castle was built by the hegemon Toyotomi Hideyoshi, who ruled Japan in the latter half of the 16th century, on the site of a temple called Ishiyama Hongan-ji. It has been burned down in a series of battles in the 17th century, and reconstructed later. The steep walls that rise close to 30 meters high are made of huge blocks of stone that were transported to Osaka from quarries over 100 kilometers away. The sheer height of the walls and the wide moats they rise above make for a grand sight that can be matched by no other castle in Japan. Also of interest are the tower's eight roof dolphins and the ornamental roof tiles and reliefs carved in the shape of tigers, all of which are gilded with gold.