This model is based on: BRIO Double station by HideaKi | Download free STL model | Printables.com
I saw it, liked it and used it as inspiration.
For the barrier and colums and walls use M3 Screws.
The roof is to be glued.
The author remixed this model.
It is not really a remix, but I was heavily inspired by this model.
I saw it, liked it and based on the tracks I already had drawn I recreated that design.