The reason some model train layouts turn out better than others often comes down to realism and aesthetics. To look realistic and not “toylike,” a layout should not be too predictable in design. A mainline running close to the edge of a standard 4ft x 8ft space and then curving at the end to form an oval will look “toylike” unless there is clever scenery or props to disguise the predictable track configuration. Where possible, it usually looks more realistic to include gentle curves (just like on a real railroad) and position the mainline at a slight angle from the edge of the benchwork. Hiding the curves with tunnels or hill cuts effectively distracts the eye from the fact that the train is running around an oval.

Another alternative is to make the layout point-to-point. Real railroads work this way so why not yours? Unless your whole purpose is to run the train in a continuous loop, a point-to-point layout featuring two separate industries or towns that exchange goods is the most realistic way you can operate. Remember, though, to figure out how to turn the locomotives around at each end. A turntable, wye, or reversing loop may be necessary but they also offer additional challenges as well as interest and convenience. The available space is obviously a big factor to also consider.