A Smartspace post shows two different ways of visualizing the parts of cities most photographed by visitors, and provides some thoughts on the meaning and usefulness of the visualizations:

The first , done by Yahoo! Research Berkeley, simply uses the tag cloud approach to map the most frequent location tags used alongside images of London, creating a tag map of London as seen from photographers’ point of interest. As the Yahoo! team theorized: “Individual pictures taken at a specific location act as ‘votes’ in favor of that location’s interest…”

The second post, from Fabien Girardin, analyzed Flickr tag data to produce “heat map” visualizations of similar data for other cities, primarily Barcelona. The same outcome can be seen — photographers tend to take (or at least post) images taken around the most known landmarks.

Via Smartspace.com