(CNN) -- [Updated 2 p.m. Monday, April 9] Children play soccer next to a run-down building in Muelheim, a city in the industrial Ruhr region of western Germany.
Steelmaking and coal mining have been on the decline in the region, leaving Muelheim and many other western cities in debt. That has prompted some politicians to call for an end to the "Solidarity Pact East," which for decades has focused money on rebuilding eastern Germany.
Congrats to "dossous86" and "prims" for being the first CNN.com readers to guess Germany in our weekly photo challenge.
[Original post] Do you know where this photo was taken?
If you think you know the answer -- or if you just want to take a wild guess -- post it in the comments area below. Later in the day, we'll reveal where the photo was taken and give credit to those who figured it out first. (The more detail, the better!)
Each Monday morning, we'll post a new photo and challenge you to tell us its origin. The photo might be related to a prominent news story or theme -- or it might just be something that caught our eye.