TerraGenesis has a photo tutorial on making a 28mm Scale Church. It’s done in a cross layout and features a nicely done interior.
Modeling
Cork Terrain Tiles Tutorial
The Wargaming Depot blog has a tutorial on making terrain tiles from cork.
It’s an idea that I considered for quite some time, before finally settling on doing a similar thing with 1 foot square carpet tiles.
Hills, Mountains and Cliffs For Wargaming
The Schild en Vriend site has a nice article discussing hills, mountains and cliffs on the wargames tabletop