A picture gallery shows some of the work already underway and describes some of the high-technology used in the project.
"Through photography, laser-scanning, and a slew of other mapping techniques we've never heard of (photogrammetry? say what?) -- they're compiling a uniquely comprehensive digital database of Africa's built environment, from Persian baths in Zanzibar to mosques in Timbuktu. As best we can tell, it's the largest documentation endeavor of its kind."