Some time ago I recall hearing about toilet walls which were see through until someone went in and locked the door. Today we happened across them.

We were walking to our dinner in Tomigaya and they certainly stood out as we passed by.

After the dinner following directions back towards a different train station we saw them closer.

Going around to the front we could then read the signs…

… sadly they don’t seem to work when it’s cold, and they’ve chosen to lock them at sunset. Given how cold it gets in Japan I can only guess the cold was not a factor in the initial design, but in reality it would seem they haven’t quite worked out.

If you are in the area- suggest you don’t come here on public holidays or after 5pm in autumn, winter or spring.

Here is a link to an article about them

https://www.atlasobscura.com/places/transparent-toilet