I built an HO train layout on a 6x6 foot section of thick plywood. My layout includes a working silver mine, a southwestern U.S.A.village, a wharf with boats, and a farm with house, barn, and sheds. Most of the structures are scratch-built buildings. To complete it I want to add lights for the structures, people figures, and more scenery. Right now, I'm just running a San Francisco-style streetcar which will have to do until I get a decent train set.