The Micro/Small Layouts for model railroads is home to the Small Layout Scrapbook. It is full of pictures and ideas from small layouts around the world. Another section at the same site has a set of instructions to build your own turntable from a CD, and has a N shelf layout using a similar turntable.
The Northern Virginia NTRAK club has a T-Trak division with a gallery of their modules. For more examples visit the Roseville Roundhouse MRR Club and look at their modules. These t-trak modules have great examples of sky boards that are something other than plain blue
The T-Trak Yahoo group has a collection of photo albums. I like the one by Rob from Australia with the two different stations.
Another modeler, also from Australia, has been building single track modules using the standard modules. He has a blog called Adventures in N Scale Model Railways.
These sites feature N scale trains and paper model kits from scalescenes.com. The first is a small show display layout . The second is Ardley Bridge as seen in a gallery of photos featuring it and a variety of other model railroad projects.
This site, Papphausen , has a lot of interesting pictures and information gathered from the author's many model railroad layouts. He also has a great section on scratch-building using paper and cardboard.
This waterfront layout by Kaustav has some very interesting examples of scratch-building, from oil storage tanks to cranes to ships.
Another spin on the T-Trak standard comes in the form of these amazing Japanese modules that use a single track instead of double. Also the Japan Rail Modelers of Washington DC have an article about building these mini-modules.
The Alexander RR is a short line in central North Carolina.
The Carolina Coastal Railway (CLNA) operates a line between Raleigh and Plymouth, NC as well as switching services in the Port of Morehead City. Has interchanges with NS and CSX.
Goods & Not So Goods is a UK web site that covers a lot of the history and technology of railroads, including common loads and how they could be modeled. Also has a list of line side industries and suggestions on how they could be modeled.
North American Signaling , by Carsten Lundsten, explains the basics on signaling and safety rules.
Port Jervis Line is a single-track commuter rail line in New York, used by Metro-North Railroad and NJ Transit.
From the Skyscraper page forum comes a photo essay titled Suburbia with pictures from around Hamilton, Ontario. Of particular interest to me was the strip mall.
Useful dimensions for general design drawing. By Roymech.co.uk.
More dimentions can be found at the Dimensions Guide web site.
Hobby Chest is a shop in Jacksonville, NC.
Laserkit.com has wooden kits from American Model Builders, Inc.
Model Train Stuff is an on-line retailer
The Scale Models Division has signals, laser cut structures, and vehicle accessories (trailers, campers, etc.).
Train Buddy is in Wake Forest, NC
Rolling Stock, etc.
From the 2-Guyz site comes this amazing thread about scratch building a steam locomotive.
On the Whistle Post Rich C posted a how-to build a N scale track cleaning car from an old 40 or 50-foot boxcar. There is another similar method on the Railhead Photography web site, the main difference being the beveled edges and the fishing sinkers for weight.
Yellowhead Railway Co. by Dan Crowley. Asphalt roads, easy trees, ground throws, etc.
These are links to construction threads featuring buildings. The first is an industrial building made from styrene and card.
This is an old page on making chain-link fences that is hosted by archive.org
The Whistle Post has a recent thread about making trees using floral wire, jute twine, and ground foam. What I like about these is the variety the poster achieved by combining different shades of twine with a variety of ground foam colors, as is illustrated in the second picture of the first post.