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, watermelons are grown into the shape of a square so they are easier to stack and transport.
108
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, it is tradition for husbands to get a monthly allowance from their wives.
6
In 2012, as phone booths become increasingly obsolete because of mobile phones, a Japanese artist has turned several booths in Osaka into aquariums.
7
Most streets in Japan do not have names.
6