Although this Yard Tower is based on the prototype that was found in the Santa Fe Barstow Yard and the Southern Pacific San Jose Yard, similar ones are found all over the country such as in the Allentown Yard. The main structure is corrugated siding and the wrap-around walkway is see-through grating with actual supporting joists underneath. Kit includes all etched and cast brass as shown begging to have the interior added to be the showcase of your yard.