France Telecom has a very lousy core yellow pages service, but it comes with a fun extension. This site shows you a picture of where I live (2nd floor, just above the store). You can pick a place on the map or navigate within each street. The parameters are visible in the url, so it would be easy to send requests from the outside.

What do you need that for? How about getting visual cues before you travel to an unknown city.

01/27/05 update: A9 Debuts Yellow Pages (more info).