This video is about a model train show in Germany which was organized by three railway clubs. The members present their modular model railroad system built in HO scale. There are some modules which are absolutely worth seeing because they represent some frivolous scenes. And, also the steam locomotives and the diesel locomotives with real steam and smoke generator are worth seeing.
Actually, there are more than 250 videos about model railroading and railway modelling, for example, on Dailymotion and YouTube. Please, visit also Pilentum's Facebook site.