Originally Posted by
AlwaysAisle
For museums, I am not aware of a pass which is valid for entire Japan. There is a museum pass called Grutto Pass which is valid at 79 museums in Tokyo where admissions are discounted at each museum. Grutto Pass is not unlimited admission pass, although it is discounted you still pay admission at each museums. At what point (after how many museum visits) will Grutto Pass become economical, I do not know…
This is incorrect. The Grutto pass provides "free" admission to some museums, and some others just gives a discount.
In any case, most tourists would not buy it as many or the museums are really niche type places.
Most museums in Japan do not charge a hefty admission charge anyway, so pay as you go is usually best.