For those who live in USA, and love photography ;
Wikipedia is running a contest to upload the pics of un-photographed historic monuments of USA, with a possible price of $150 to $500. Go to this > **Map Tool, **and zoom into your city. Keep clicking on the blue circle to zoom in locally in to your local area. The red flags are the monuments that are still un-photographed. Take a good photo and upload to Wiki. For more details, go to this link.