Junior General offers a good photo-realistic paper model of a modern middle eastern building.
Paper Models
European City Building Paper Model
From the Junior General, a paper model of a European city building.
Wooden Bridge Paper Model
Epic Wargaming has a free bridge paper model.
Free Paper Airship Models
For fans of the Wings of War game, here’s a page with several different free paper models of airships. They’ve probably also got some use for the upcoming “All Quiet On The Martian Front” game.