But you also may have used this Portland-created restroom elsewhere, maybe even halfway around the world. The big picture ... What's inside: A toilet, of course, plus a hand washing station ...

As time rolls by, trends come and go. If you notice this accent on your toilet, it might be a sign that it's been a while ...

Explore the UN-Water archive of World Toilet Day resources going back to 2014, covering a range of themes, including toilets and equality, nutrition, jobs, wastewater, groundwater, and much more.