Germany and Japan are my favorite places for shooting (and riding) passenger trains.
My first time in Germany was in 2012. I took the high-speed ICE train from Frankfurt Airport north to Cologne, where this beautiful train station (Hauptbanhof) sits just across the famous bridge. All of Europe is rail-ified but Germany is probably the most intense. You can go anywhere so easily and cheaply and quickly! And the infrastructure, like this station, is so cool and beautiful.
The opportunities to shoot trains in Germany are stupendous! Every station is open-air to some degree and the trains roll by non-stop all day long and into the night. Passenger trains in the US and Canada don’t really excite me because they are so few and far between. In Germany though, they are the big show.