D&D Home Page - What Monster Are You? - D&D Compendium
D&D Home Page - What Class Are You? - Build A Character - D&D Compendium
Yes the scale is proportional to the 2d maps. I use the scanned image to draw over the top of, to make sure the proportions are correct. The walls are a bit robust to be fair, but thats how it is on the map.
The scale of the original file is 1:1 also, so the feet markers represent the actual size I have drawn it. This is useful for the walk-through tools in sketchup and taking persons' eye view of certain aspects.
It would be great to have a Google Faerun A bit like the old Forgotten Realms Interactive Atlas, but more Google Earthesque.