You could include some Cities of the US, especially san Francisco. Check out the poop maps....
I took my grand-daughter to a river front park I used to go to up in Portland when we were visiting a couple years ago... She needed to use the bathroom and I knew one was there, besides I used to love to just throw rocks in the river when I was a kid and watch the boats and ships and thought I would show her.
Every trail I started to turn down had visible piles of shit along side you would have to literally step around. We walked a 100 yards down the river to avoid going through 20 feet of brush that was evidently now somebodies toilet...
What really pissed me off, there was a very clean, real public toilet that my grand daughter used when we got out of the car, a 100 yards back the other way in the parking lot.