If your interests lie in mapping, digital humanities, and things Gothic, check out this web site: Mapping Gothic France.
"With a database of images, texts, charts and historical maps, Mapping Gothic France lets you explore parallel stories of Gothic architecture and the formation of France in the 12th and 13th centuries, considered in three dimensions: Space, Time and Narrative"
There's a lot here, all related to France and cathedral architecture. The curators of the site have included georectified archival maps, an interactive timeline, loads of photographs (geolocated, of course) and cathedral footprints - like the ones above for Notre Dame and Cathedrale S-Etienne.
"Though today the shape of France is a well-known polygon (reaching northward up to its containing coastline, stretching southward to the Pyrenees), in the middle ages the French kingdom was not so cookie-cut. Imagine the history of France as a history of polygons, and you'll witness the kingdom's outward expansion. A disjointed set of Capetian pockets of land -- the holdings of Hugh Capet, founder of the dynasty -- slowly grow outward by fits and starts: feudal custom, marriage and warfare, celebrations and battles. Click "Begin" to watch that story."
This site came to my attention following the New York Times article on digital humanities projects. The author of the piece put out a call for other digital projects in the humanities, so go to the link if you want some additional interesting pages to check out.
Then I got a comment on my blog post from Trinity College's Jack Dougherty talking about how folks at small liberal arts colleges can get these large-scale digital projects off the ground when they partner with larger institutions. Mapping Gothic France is a collaboration between Columbia University and Vassar College (props to my former colleague Matthew Slaats from Vassar!) and it seems a good model to follow. The results are amazing.