For some reason that I can't fathom, the designers of modern trains seem to think that people want to view the scenery from inside sealed plastic boxes. The Zentralbahn's new class 150 and 160 EMUs have no opening windows.
160.103 and 150.001 combined to work IR2224, the 12:55 from Luzern to Interlaken, away from Meiringen on 14 July 2013.