Some people interpreted the Geotaggers' World Atlas maps to
be maps of tourism. This set is an attempt to figure out if that is really true.
Some cities (for example Las Vegas and Venice) do seem to be
photographed almost entirely by tourists. Others seem to have many
pictures taken in piaces that tourists don't visit.
Blue points on the map are pictures taken by locals
(people who have taken pictures in this city dated over
a range of a month or more).
Red points are pictures taken by tourists (people who
seem to be a local of a different city and who took pictures
in this city for less than a month).
Yellow points are pictures where it can't be determined
whether or not the photographer was a tourist (because they
haven't taken pictures anywhere for over a month).
They are probably tourists but might just not post many pictures at all.
The maps are ordered by the number of pictures taken by locals.