I have just about finished up with some Ruined City scenery tiles, thought I'd share them with you. The bases are made from 12' vinyl floor tiles, cut down to 6' squares.
The buildings are from GameCraft (http://store.gcmshop.com/c/55/rubble-kits)
(forgive me, this one is sideways)
this Factory tile will likely be used for an Objective
Storage Tank objective tile
The Weyland-Yutani Corporation is behind everything