http://popspotsnyc.com/ (http://popspotsnyc.com/)
This guy found the actual sites in NYC of some pop album covers. Of course, many of them have changed from what they were originally, but it is still pretty cool.
Here's another, for different cities.
http://www.rockandrollroadmap.com/album-cover-locations/ (http://www.rockandrollroadmap.com/album-cover-locations/)