This is № 436 of Pilentum's model railroad videos. Jens Krogsgaard - a Danish model maker - started building his fantastic HO scale layout which is called “Kælderkøbing Modeltogbane”. The model railway layout of Kælderkøbing is a traditional Märklin layout.
Video № 149: Model Railway in HO scale of Switzerland.
Video № 148: The City of Hamburg in Germany as Model Railroad Display in HO Scale.
Video № 137: Model Railroad Layout by Modelspoor Group Nienoord with Miniature Cars and more than 100 Trains in HO Scale.
Video № 108: Rail Transport Modelling at Fairhaven in HO Scale.
Video № 107: Mexican Model Train Layout in HO Scale.