Matsumoto-jo is one of the last remaining original Japanese castles, build for defensive purposes. Dating back to 1593 and nick-named the Crow Castle, it is located in central Japan (Honshu), the city of Matsumoto being one of the gateways to the Japanese Alps. The main keep has 6 floors, although from the outside one could guess that there are only 5. It is build entierly out of wood on the rock. By Mihai-bogdan Lazar.