Here's a map of the Earth. As you can see, it's pretty big. Despite this, I'm wandering around a lot of it for about a year, taking Someone Once Told Me photographs in many different places.
I'm using a Phottix Geo One GPS unit on my Nikon D5100 to chart exactly where I'm taking a photo of each of the many people that I'm asking to take part in SOTM along the way.
So wherever you see a camera icon on an area of interest, just zoom in to see all the icons in that location (you may have to zoom in quite a lot, down to a street level of detail, to see all the icons available). Click on an individual icon for a thumbnail, then click again to discover the story behind that person's choice of memorable phrase.
You can also view the SOTM World Tour in a larger map.