HO scale model trains are a significant part of model railroading history, and we can partially credit the overall popularity of model trains with the rise of a convenient, tabletop scale like HO.

Spike Morningstar talks to visitors while he controls a train on the Four County Society of Model Engineers model train display at TownMall in Westminster Friday November 24, 2017.

The P.R.A.L. is an HO scale layout, designed for realistic daily operations, with an emphasis on coal traffic, but allowing for continuous running for holiday shows, with a variety of equipment.

First-time hosts Randall and Patty Dravis welcomed visitors to their Delhi home featuring a layout of fictional Bailey Falls, Colorado, circa 1950-1975, and HO model trains from the Denver and Rio ...