What about the good ol' DL&W Scranton Yard, about 1 mile from my humble home.
Now the
new Steamtown, USA (straight from Bellows Falls, VT), the yard is full of decayed, asbestos-covered engines and freight cars, except a select few.
The roundhouse, turntable, small station, and about 1/20 of the track is still usable (mainly for the excursion train that runs between the yard and some college around Scranton).
The mainline sees about 5 trains every week, run by some old DL&W, D&H, LV, or Adriondack ALCOs (or a DL&W GP40-2W), usually with about 5 or 6, up to about 25 freight cars. Don't know who their owned by, but they run.
The excursion and other trains that run from Steamtown are run by it's four main locos: the CP's G-3-c 4-6-2 #2317, the CN's S-1-b 2-8-2 #3254 (which has a model in Trainz by USLW), the BLW's unclassed 0-6-0 #26, and the NKP's GP9 #514.
#3254 has recently had some sort of boiler dent, and won't be running for a while, #2317 is still operable (yet hasn't been out of the roundhouse in a while), #26 is still operable (but not used), and #514 is currently the main engine on excursions.
As mentioned above, there are a few non-rusted engines there, such as the IC's unclassed 2-8-0 #790, the RDG's T1 4-8-4 #2124, and the UP's
MASSIVE Big Boy 4-8-8-4 #4012, with B&M's P-4a 4-6-2 #3713
Constitution in the workshop being rebuilt.
I used a Wikipedia link to a book called
Steam over Scranton: The Locomotives of Steamtown for some of this research, found here:
http://www.nps.gov/history/history/online_books/steamtown/shs.htm
Whoops, got my ramble on their, didn't I?
Anyway, check out the book, it explains about all the trains there.