The comment from your son...LOL!
Haha...I thought it was a toll station.
The glare of the sun makes it hard to see the word "Toilet."
I would have thought it was a subway station entrance, except we have a couple of those in downtown Portland from about 1910. But it would have taken a few looks and some deep consideration to realize that is what it was even so.
Potty humor -- my son said the following to me the other day: "Change my diaper, my ballsies are wet." It was hard not to laugh.
Totally. Bathroom humor is the best humor in the world.
No one would have known what it was, if you hadn't pointed it out, anyway.