The 1 yen coin can be used as a weight, because it weighs exactly one gram. Also, it can float on water.
19
In Japan, it is tradition for husbands to get a monthly allowance from their wives.
6
The Gate Tower Building skyscraper in Japan has a highway passing through its fifth, sixth and seventh floors.
7
In Japan, gambling is illegal. However, they circumvent the law by giving out prizes instead of cash, which the winner can then sell back to the establishment for cash.
-3
In Japan, more adult diapers are sold than baby diapers.
50
Most streets in Japan do not have names.
6