Google is going to find landmarks

From Scientific American:
GoogleAcropolisCluster
While it's possible to search the Web for images, there's still no way of searching the images themselves. Google is hoping to change this through a research project that can match digital photos of certain famous landmarks with text descriptions of those landmarks (including their namesname and where they're located) without the need for a conventional search engine.

Google created its experimental landmark recognition engine by developing a list of targeted landmarks (such as the Eiffel Tower and the Acropolis in Athens) and finding GPS-tagged digital photos of those locations. The researchers then "taught" the recognition engine to identify specific landmarks by clustering different images of the same landmark (taken in different lighting and from different angles, for example).