Sixteen doors from sixteen countries. Photos taken over a period of over twenty years.
 
There's a rooster at one door, which I think is good luck. 
 
Places featured (this has changed over time, and may change again,
but right now, as of August 2020 this is what it is):
Romania, China, France, Wales
Canada, Germany, Poland, Belgium
Bolivia, Japan, Ukraine,, Mongolia
Guatemala, Slovakia, Morocco, Yemen