This model railroad layout was built as a modular railway layout by a Dutch model train club. That railroad club does exist for more than 55 years and operates only Marklin model trains. The layout in HO scale, its trains and locomotives are controlled by Marklin decoder and Viessmann decoder in digital mode.
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.