Voronoi/Delaunay research and applications; http://www.voronoi.com/
http://www.voronoi.com/cgi-bin/display.voronoi_applications.php?cat=Applications supposedly includes some ways to divide areas into mosaic-like plates.

Site with many many thumb roll-overs...http://orbitals.com/dcp/dcp15na.htm takes awhile to load.

(Clunky)online mapping interface http://booth.lse.ac.uk/cgi-bin/do.pl?sub=view_booth_and_barth&args=531000,180400,6,large,5

Ancient World Mapping Center " mapping the ancient world, from Athens to Zucchabar " http://www.unc.edu/awmc/content/xhtml/index.html

"Work stops at sunset. Darkness falls over the building site.
The sky is filled with stars. 'There is the blueprint' they say." - Italo Calvino, Invisible Cities