In Amsterdam I was shocked to realize that they have these public sidewalk urinals. It's a big round thing with "stations" all around, the guy just walks right up and does his business. I can't really describe it, so I found a picture on the internet:
I had a mixture of feelings: Amazement, embarrassment, and jealousy. You know how when you "gotta go bad" and need to hunt down a toilet, then maybe wait for your turn? It would be great to be able to have relief so easily available!