Here's a great archaeological database of the Valley of the Kings. Even if you're not running an ancient Egyptian inspired campaign, the maps of the various temples and tombs could still spark the imagination.

http://www.thebanmappingproject.com/

The KV5 tomb is especially interesting (to me at least, I'm sure people will find their own favs):
http://www.thebanmappingproject.com/..._tomb_819.html