@ www.documenta12.de, they say that:
The documenta is regarded as the most important exhibition of contemporary art, drawing attention from all over the world.
So I visited this event, that only takes place every 5 years in Kassel, Germany.
Having a friend, who is an artist (-> www.jungling.de) and lives in Kassel, is another great advantage for visiting an art exhibition. She was my very private documenta guide and that money can't buy! (Thank you very much Steffi!)
Beside all that art, I wanted to try out what I can do with a camera and a GPS. 
This is an impression what you can get:
Download this (kmz) file: -> http://www.ipernity.com/doc/nib/571426 and open it with Google Earth
then you can virtually walk my way. With a klick on the most waypoints you can get pictures, I made there.
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For those who don't want to install Google Earth and use Firefox! there is a way to watch the same in Google Maps -> klick here to start Google Maps
Attention: This link opened with Internet Explorer caused sometimes crazy results ;-)