I had an idea similar to this based on my childhood memories. I tried creating some work like this a few years ago, but it never worked the way I had hoped. But Corinne Vionnet did something pretty amazing. Here's what her site says about her work:
Series of photographic works entitled "Photo Opportunities", from hundreds of snapshots of tourist locations culled from the Internet. By collecting and then bringing together successive layers of around a hundred similar "photo souvenirs", these images conjure up questions about representation and memory of places.