it belongs to the KXHR (Knoxville and Holston River RR), it was originally the Chattanooga Traction Company (later absorbed into the Southern Railway), the steam train is operated by the Gulf and Ohio who is the holding company for the KXHR, they also have the Washington and Linconton #203 which is currently undergoing her 15 year inspection. (http://trainweb.org/tagrailway/ctc/index.html) (http://www.threeriversrambler.com/southern-154/) (http://www.gulfandohio.com/)
We have this Lego multi-story Walmart at the Mississippi Coast Model Railroad Museum in Gulfport. https://www.mcmrcm.org/lego-r-corner OK, so it's not an operational Wally-World, but I need to brag on our three-year old museum that's up and running strong. Hope to break even next year.