My mother has a wall map that is covered with push pins marking the many countries she has visited. Her map inspired me to make two web pages, one for the US and one for the world, that anyone can use to visualize all the places they've visited.
Both are written using simple JavaScript, without frameworks, in a direct style that might not be practical for larger projects, but that works well for these small pages.
Thanks to those who made the excellent SVG maps used here available through Wikipedia.