I am model railroader about 50 years.
Besides I have a small HO scale colection of american, brazilian and european models, I have a “micro colection” of american N scale, for “future” layout.

Currently I have a 1.20m x 1.80m HO scale layout.
Its a fictional proto free short line: Estrada de Ferro Central Paulista - EFCP (Central Paulista RR).
They run some industries (refinery, steel works, and junk yard). Also, there are a terminal shops and tourist trains.