I live in japan. i would say has its own issues about many things but, what i do love about it is the female only spaces.
onsen.
You get butt naked and sit in very big often very beautiful baths the size of swimming pools and chat to your friends.
The sauna is naked too. you can take a towel if you want though!
There is no way a penis owner would be allowed anywhere near these spaces unless they are under 5.