Click on a link below to download the appropriate KML file. In parenthesis is the number of markers in each file. A KML file can load points-of-interest “placemarks” into into maping programs such as Google Earth. These KML files contain lists of historical markers and their locations formatted as placemarks with a distinctive red icon of an arrow pointing to a star. Once the placemarks are displayed on the map, clicking on the icon provides a link to the marker's page on this website.
If you have Google Earth installed on your computer, running the downloaded file causes Google Earth to fly to the appropriate location on the map and display the placemarks at the appropriate zoom level so you can see them all. A list of markers on the left of the map under “Temporary Places” lets you control which ones are visible.