Here is my first attempt at a ceiling layout consisting of a O54 outer loop and O48 inner. Corner buildings are from woodland Scenics, the building flats are made by PGHtrainfanatics which are awesome by the way, locos and rolling stock are all MTH. I have Z-stuff semaphores on each corner facing both ways. I will be installing numerous Miller engineering animated billboards and there will be automated crossing signals installed around the loop as well. So far, I only have two walls simi-completed. After installing flats, corner buildings and wiring the other two walls, I will attempt to initiate landscaping of some sort. With only eight foot ceilings and minimal height to play with, this project is very tight in space, but so far, it seems to be working out. Thank goodness for those flats! Nick with PGHTRAINFANATIC has been very helpful with customizing these flats for me so that they will fit. He has also added additional LED lighting to numerous flats that I’ve ordered, some with LED color changing features. This experiment seems to be turning out okay for a newby. I’ve attached a short video of what’s been done so far. Any suggestions to make this experiment better is much appreciated.