You should go to Inuyama.

In May, I visited Inuyama Castle, a national treasure in Aichi. Honestly, I was shocked. Personally, I would recommend visiting this place over Nagoya Castle. The castle town is very beautiful, and when I walked up the steep stairs to the castle tower, I was surprised to see such a beautiful view. I think the stairs are difficult for people with weak legs, but it is worth the effort. If you use a selfie stick or a GoPro to take pictures, you will be able to create even better memories. It was a tourist spot that I would recommend. #InuyamaCastle