As a former attorney for Chessie Railroads (another life, eons ago), I remain fascinated by trains, and the UPAC was in evidence throughout our travels. I really wanted a picture of a train winding through the Columbia River Gorge; this one enlarges more or less OK with a click.
The Bridge of the Gods is, as Gregarious Son says, a human erector-set-like version of what was, according to Native American legend, a "natural" bridge across the Gorge formed at one time by a logjam of debris at a turn in the Columbia. A mural -- too faded, alas, to photograph -- on the bridge foundation depicts its long history in its various forms. I took some photos for Chicago Son, who was fascinated by engineering and architecture, and would have loved to have photographed the bridge himself. We used it to cross to the State of Washington, so the grandparents could say that they have been there.