A rail yard I built on the Alphacraft server.  It may not be an entirely accurate setup with a real rail yard but I did have some space limitations.  

The biggest structures are the roundhouse, car repair shop and a switcher shed.  The smaller structures are a freight house with a loading dock and an additional shed, yard office, interlocking tower and a materials shed.  Lastly, there's some smaller stuff like the water tower, sand tower with drying house, diesel fueling station and a scrap area complete with broken buffer stops, old rails, and a wrecked boxcar.

Most of the interiors have been at least started with some being completely finished.  I think I might add some additional storage sheds or other small structures, but I believe I've got the majority of the area finished.