Ah, OK. When I was there I focussed mainly on the architecture. Much of which are very old wooden buildings. At long last the Japanese have realised that their heritage was disappearing and are doing something about it using traditional craftsmen. So if you are fortunate on your timings then you may well get to see them in action.
Tokyo - I'd avoid personally!
Kyoto is the gem. It escaped the traumas of war quite simply because of an enlightened US General who forbade the bombing of this Imperial City. Highlights for me were :
with 1000 Kannon wooden warriors
https://en.wikipedia.org/wiki/Sanjūsangen-dō
This was being refurbished when we were the first time but is now finished.
https://en.wikipedia.org/wiki/Hongan-ji
This list is by no means definitive
https://en.wikipedia.org/wiki/Historic_ ... tsu_Cities)
Thus Ninja house is fascinating if only for the hiding places and security gizmos that they put in place.
http://japanlivingarts.com/nijo-jinya-a ... old-kyoto/
There is a walk along a small stream - called the Pilgrim Walk or somesuch which is rather pleasant.
Kyoto is a gem. There is no place on earth like it.
If you like gardens then go to Kanagawa but early - first thing.
Are you driving at all? If so I can give you a whole chapter and verse.
I've been to Osaka on business a long time ago. There are two twin skyscrapers tallest in Osaka IIRC - owned by Matsushita IIRC - one has a public viewing gallery on the 35th floor. The other is one floor higher and houses the boardroom etc of Matsushita. There is a coded number on the lift so don't get any ideas !! I was privileged to have a rather good meal up there when I was there. I remember gazig around the room thinking to myself 'That's not a bad copy of a Matisse. Or that one of a Monet. Or that one either. Oh...hang on a moment, Roger, just remember where you are. Those are originals and not many people get to see them'. Other than that can't remember much. Apart from the secretaries bowing gracefully as they exited backwards out of the meeting rooms!
I thought I might get some Japanese saws but TBH they were damn pricey.
I'll try and think of a few more places. Any questions just shout.
Roger