It's the famous New York Central Railroad Line in 1 Scale or 1 Gauge. In Germany, there was a big 1 scale model train meeting in June 2015. And, there was presented a wonderful model train layout in small railroad layouts, called modules. On this layout there are the New York Central System, various locomotives of Union Pacific, Conrail and the Southern Pacific Lines.
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.