Trains Presents: Tennessee Valley Railroad Museum By Steve Sweeney | August 3, 2016 | Last updated on November 7, 2022 2015 Chattanooga excursions Email Newsletter Get the newest photos, videos, stories, and more from Trains.com brands. Sign-up for email today! Get Updates Join Trains for a trackside look at Sept. 2015 steam and diesel excursions the Tennessee Valley Railroad Museum orchestrated out of Chattanooga, Tenn. Only from Trains!