CC Photowalk maybe?
When I was in Tokyo earlier this year a few friends and I organized a photowalk around a few parts of the city with the goal of creating a pool of creative commons licensed images of the city. We had almost 20 people on the walk, some locals and some visitors and the photos taken that day (including the one above that I snapped in Harajuku) are amazingly cool. Better yet, they are all available for other people to use thanks to CC. I was thinking it might be cool to do something like that here while I’m in Vienna as well. I know there are some existing photowalk groups already in town and maybe this is something they’d be interested in helping out with? It’s a fairly simple idea, map out a rough route, grab cameras and go. Afterwards post them all to Flicker using a similar tag and license (we used attribution/non-commercial/share-alike). It was a fun thing todo during the day, but also is helping build a resource of images that other people can use when they need something representing the city. Would anyone be interested in doing something like that?