more....

this one takes about 3min.20sec. from the upper level station and round to the same point. Although the other layout took longer, it was actually shorter because with the auto 3-way point it used the same bit of track more than once. This 'joiner' is not as neat as the last, they get a bit difficult to construct in photoshop when they are so big, and using a fairly wide angle lens and low viewpoint gives perspective problems...
I could add more in the spaces, but then my kids would have nowhere to sit, and it is hard enough to move around it as it is.
Using three or four levels might not be too unrealistic in Tokyo, but for the rest of the world gets a bit far from reality.
(need a bigger house....) actually I have a huge unused loft..... but it is so hot up there it is unuseable.