[Editor's note: Similar to Flickr's SHP api, but discrete to groups of photos rather than places (cities). Data visualization sorts all the geotagged pictures by photographer and date/time, and for each two adjacent pictures that are reasonably close together in place and time, drawing a line between them. The different colors represent different modes of transportation: Black is walking (less than 7mph), Red is bicycling or equivalent speed (less than 19mph), Blue is motor vehicles on normal roads (less than 43mph); Green is freeways or rapid transit. SF version.]
Republished from Eric Fischer’s Flickr site.
(above) Paris. The cluster to the northwest of the central city is La Defense. The cluster further to the southwest is Versailles.