Here are two links to two different layoutsne shows an indoor RhB layout and the other one shows a HSB garden layout. I hope you have not seen them yet. I got the links from the french forum, voie métrique libre.
That indoor RhB layout is well impressive. Amazing scenic details. It must have taken years. The man (assumption) must have some money. There were (among many other items) two Allegra sets sitting on a shelf as well as one on the track., and all that overhead wiring must have cost a pretty penny. And it looks like it is all signalled. Astonishingly good.