Before I throw the photos up, a few concept ideas for the railroad.
It's situated in a North-South 35'x12' (approx) room with a door midway on the western side and windows on each end. The room itself is now complete except for carpet, but I am moving ahead with construction, leaving the layout semi-modular so I can remove the tables later to install carpeting.
The railroad itself is a realistic fictional layout. It will portray a small railroad that starts at the foot of the Rocky Mountains and goes right into the mountains, through various valleys and tunnels, and culminates in a steep grade that tops the Continental Divide with a small town on the other end. There are only two cities on the layout, the city at the base of the mountains (We'll call it City A since it's unnamed now) and the city before the long climb over the Divide (We'll call it City B, and since it isn't even in existence yet all talk about it is planning).
City A has a Walthers 130' turntable and a six-stall roundhouse, with two stalls extended to 145' for the big ones. City A also has a passenger station, a small 5-track yard, and some industries to the West of the terminal (south in real-life, in the corner.) As the line moves West into the mountains, a spur leads off into the mountains to go to an interchange with the Union Pacific (it's actually an under-table staging yard.) The line then continues to a logging area, over a river near a waterfall, and by a coal mine, where we also have the only passing siding on the line. From there it progresses to City B.
City B is the small city at the base of the Continental Divide. It will have a few industries, although these are not marked on the track plan as of yet. It also has an interchange with a local narrow-gauge logging line, and to save operating costs (and construction headache) the two gauges share a dual-gauge wye. The narrow-gauge line climbs back into the mountains, up above the standard gauge line, and ends right above the tunnel leading to the UP in a small old-western style town with a small turntable and yard.
Past City B on the standard gauge is the climb over the Continental Divide. The line curved off to the left and makes a gigantic circle around the mountain, crossing over itself and culminating in a small town on the top.
The railroad will be set in the late 1950's, using whatever equipment would've been available to a second-hand railroad in that time period (the idea being that all of the road's locomotives were bought second-hand from the big railroad.)
The layout itself is constructed using the Woodland Scenics subterrain system (although this kinda blends with my own system in City A.) The height starts at 37" in City A (34" from floor to tabletop, 1" thick foam covering the table, and 2" risers elevating the track and city.) and continues to climb up to who-knows-what at the other end. The furthest current table has a 2'x7' staging yard concealed underneath, accessed by a ramp with a hefty 7% grade.
The entire layout will be DCC, probably with the MRC Prodigy Advance system with tethered walkaround control units. Most of the turnouts will be Atlas turnouts, with a couple notable exceptions (right now the staging yard is on hold until I get a Walthers double slip). The track is Atlas Flextrack, Code 83 profile. The locomotives being used will range from small 0-4-0 switchers to 2-8-2 Mikes (and maybe a 4-8-4 Northern from the ATSF), as well as several larger locomotives (including two 4-8-8-4 Big Boys) that will visit periodically from the UP interchange. The layout's minimum radius is 22", although most of the curves are more around a 36" radius to allow even the Big Boys to feel at home.
A rather ambitious plan for my first "proper" layout (you should've seen the monstrosities I dreamed up at our old house), but I'm rather enthusiastic about the room I've been given at this new room and am ready to go at it with gusto.
OK, enough idle chit-chat, here's the photos of the layout itself.
This photo is an overview of the entire layout as it is today. This is looking towards the Northern end of the layout room.

Here's what a typical table on the layout looks like: wooden frame, blue foam top. You can see my existing DCC system, as well as one of two Big Boys that I own (the other being out of commission since a nasty collision with a track-end buffer on the last layout.)
From there we see the ramp leading underneath the table, covered halfway through by a lift-out access panel. The ramp leads to a small under-table staging yard, approx 3x7' in size. This will be extended when additional tables are installed, as right now, it's very small, although some staging is better than no staging at all
Returning to the world above, we see the main table for City A. The black matting is where the switchyard will be, and the box of track-bed is the location of a future backshop.
On the other end of the table, we have the ubiquitous Really Big Roundhouse, accompanied by the companion Really Big Turntable.
Next to that is the messy surface I like to call my workbench.
This is the other side of the room. Right now it's my area, but someday I'll move out, and when I do this will become the other end of the railroad, with City B, the Continental Divide, and the small town at the top.
Last but not least, the track plan. In a world of fancy computer programs that allow you to design your layout in 3d and preview it in all of it's beauty, I dare to let my design be ugly: good ol' graph paper and a pencil, and lots of erasers
-Chris (tm)