There won't be much.

I'll look for opportunity for forced perspective. there'll be a few trees around.

Most of the rest of the scenery will be urban buildings, especially the backs of them.

The railroad museum will have a chain-link fence, with a ticket office, shop and café - and a carpark for my best car models. But the scenery is low-key here to let attention rest on the models. The backdrop can be flats of city buildings with their backs to the tracks.

The waterfront allows great modelling, of water and pilings (there will be a drainage canal) and interesting old buildings, and all the clutter that seems to gather in these places. Consider a photo backdrop of an enormous ship at a dock on the other side of the mainline track.