For interesting photos of scenes unique to Japan, do a search for "only in Japan" on Google Image Search. Here's a sampling of what you'll find on the top few pages...

Only in Japan --
A relaxing day at the swimming pool

Only in Japan --
Hello Kitty in the snow

Only in Japan --
Manhole cover

Only in Japan --
Nipplescarf

Only in Japan --
Honda WOW: Dog-friendly concept car

Only in Japan --
Extreme casemod

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It's also fun to see what comes up when you do an "only in [...]" search using other place names. Can you guess where each of the images below are from?

Only where? --
Subway map, only in...?

Only where? --
Car wash, only in...?

Only where? --
Snake wash, only in...?

Only where? --
Convenient emergency services, only in...?

[Link: Google image search]