Take a tour of my HO model railroad. Set in the 1950's my mid-sized layout features around-the-wall construction and a good 'nuff level of modeling. Mostly, it is a lot of fun.
This article covers model railway motive power depots (MPDs), including many variations. Railways had large and small MPDs.
Planning a model train layout will require time and effort to avoid making serious mistakes. Design a simple and realistically working model to accommodate the scale size of the train and its tracks.
In this article, I building an OO gauge model of an ultra modern waiting room on an island platform. This example is seen at Peterborough Station, UK.