Shadowulf's western town is designed for 25-28 mm scale wargaming. This isn't the same as the old Shadowolf set from Australia, but has a lot of similarities. There isn't much information with this set, but it appears you can either print the buildings yourself from the 'download original' link visible when you click on a building, or you can order them as printed buildings or sets.
Laura's printable miniatures, including a 1:48 scale Halloween House can be found at her
Minis and More Webshots site.
Wizards of the Coast have an archive of free printable buildings (and some sets for purchase) in the Dungeons and Dragons section. These include covered bridges, castle walls, church, tavern, graveyard, and many more.
Canon Creative Park is the motherload of free printable miniatures. Their
Buildings of the World section has everything from famous Japanese Temples to the Roman Colosseum and Mont Saint Michel. The seasonal section contains a complete
Santa Claus House and a
Craft Town section lets you create an entire town.
This page contains free downloadable kits for paper models of a plains tipi, an Iroquois longhouse, a set of various styles of houses from prehistoric Ohio, and a Northwest Coast Cedar House.
Crechemania has a number of free downloads for
paper creches and nativity scenes To find them on their site, do a search for free downloads, or search their downloadable creches for the free versions