The Shimabara Rebellion of 1637–38 was fought at Tomioka and Shimabara Castle and ended at Hara Castle, with roots in the martyrdoms of Nagasaki and a legacy of hidden Christians.
The route starts on Nishizaka Hill in Nagasaki, follows the revolt through Amakusa, Shimabara and Hara Castle, and ends at Dejima, where seclusion pushed Christianity underground.
Miyamoto Musashi, Japan's most famous swordsman, moves through this route from the Sekigahara campaign of 1600 to the duel on Ganryū Island, Osaka Castle, Kumamoto Castle and the cave of Reigandō, where he wrote The Book of Five Rings.
The route follows the biography stop by stop, from a village birthplace that sources place in two provinces to the cave where he spent his last years. Several details, including his role at Sekigahara and Osaka, are debated or rest on later accounts.
