Els,
is there a way to get the world map show all WHS and TWHS together?
it would give a more complete overview in specific area's because if it's far away; I rather cover the TWHS too and visual seeing what's where is handy.

christravelblog
There would be but the map would be huge and could to the limits of your browser. It would also be hard to discern much with dots everywhere.

The combined info is limited to countries.