This may have already been posted, but my searches didn't turn it up so if it has let me know so that I can remove this thread.
This looks like a community project of some sort, and the maps are amazing. There all all types of maps and most look to be photo-realistic. Definitely check them out.
Here is the main page:
http://www.danielrivera.org/gallery/index.php
Here is a link right into the gallery:
http://www.danielrivera.org/gallery/index.php?cat=5