But if Japan already captured your heart and if you want to enjoy more of what Japan has to offer, I will tell you that you can have delightful experiences and see some amazing places by just exploring the neighborhoods.
Here's one of these places, a small temple I discovered a couple of years ago and to which I managed to return this month. It is located in Ueno, Matsugaya (somewhere behind the Oak Hotel, a quite well-known hotel for backpackers). It's a small place of astonishing beauty, with a little Japanese garden, a pond with a lot of hungry Japanese koi and beautiful stone lanterns... Isn't it a shard of paradise?
EXIF info:
Nikon D90
Lens: 8-16mm F/4.5-5.6G
Focal Length: 8mm
Aperture: F/5.6
Shutter Speed: 1/250s
ISO Sensitivity: ISO 200