In the era of steam, there were the iconic roundhouses with multiple stalls encompassing a turntable ... in just about every scale. Structures help set the stage for a layout's look and practicality.

The maximum grade is 2%. The HO scale layout, built with L-girder benchwork, ranges in height from 43" to 60". It features Homasote roadbed on ¾" plywood and Atlas code 100 flextrack. The scenery ...