Very nice. May i ask what the dimensions are?
I'm in the 'planning' (i call it that, anyways ) stage of my own beginner N scale layout; it's always nice to see what other people have managed to fit into a simple loop formation. Even with 12' x 3' I'm having trouble trying to distill a few basic elements into an interesting, semi-prototypical, layout!
This is about your layout, however, and there looks to be some effort put into the same over the years. Its layouts like this that i drool over, and come back to time and again just so i can think to myself, 'one day!'