Matakishi has some instructions with photos for making World War II era buildings out of sheets of cork.
Here’s a clever method for making false building fronts using molds created from craft store sheet foam.
The Alternate Realms site has several nice cardstock buildings, including some huts and a chapel. The page also has a couple of tanks and a science fiction walker vehicle. Finally, there’s a model of St Michaels tower on Glastonbury Tor (sp?).
A two story, half-timbered inn would be a great addition to any wargames table, and useful in miniatures games ranging from fantasy to World War II. It’d also be a lot of fun to work out a rold playing baroom brawl. Here’s a pictorial tutorial on how to do it. A warning, though, the pictures are HUGE and take a bit of time to download.