Wiki Loves Monuments
"Wiki Loves Monuments" is a public photo contest around heritage culture across europe, organized by Wikimedia chapters. So if you are still a good photo-mapper,
The project will use OpenStreetMap as background-map to coordinate the work:
The project will work a lot with geo-coordinates, official object lists and geocoded photos.
If you have ideas how to involve OpenStreetMap in this cool project, post it here.