This is № 469 of Pilentum's model railroad videos. Cristóbal Miranda has built a subway station as a diorama in HO scale. The underground station is part of his beautiful model railway layout.
This is № 433 of Pilentum's model railroad videos. This video, we see a diorama, scale model or replica of the metro station “Hauptwache”, which is located in the center of Frankfurt am Main in reality.