A National Treasure, Japan's oldest standing castle is said to have originated as a fort in 1440. The current donjon (main keep) built atop a 40m rise beside the Kiso-gawa dates from 1537 and has resisted war, earthquake and restoration, remaining the penultimate example of Momoyama-era architecture. Inside are steep, narrow staircases and military displays – the view from the top is worth the climb. The castle is 15 minutes' walk from Meitetsu Inuyama-yuen station.
