That is the layout of one of the best guys in this hobby. His name is Bill Rennolds and he is a contributor to this forum. The detail and planning that went into this layout is incredible. You can see a photo gallery here and hear a full interview I did with him about the planning of this layout here
I spent the evening with Bill and his lovely wife back in October and by far this train room is the most comfortable and inviting train room that I have ever been in. Not only does he have an incredible layout, but Bill is a talented and sincere friend who has guided me in other areas of my life. Bottom line, Bill is one of the best.