The interlocking machine's model board sits in the center of the tower's upstairs cabin and is visible from 360 degrees through windows on all sides. The operator's office desk, a wood stove, lanterns and additional features, such as pin-up posters and a calendar, can also be seen.

The exterior of the two-story Interlocking Tower is loaded with authentic details, including a weathered, shingled roof, an identification sign stating "WS No. 7" and an upper deck with staircase to the ground level. Tires, a spool of wire, water hose, diesel tank and barrels give proof to the daily activity at the Tower, including a toolbox and a pair of boots on the deck outside the upstairs cabin door.

The building has three lights - two over the exterior doors and one interior upstairs light. The pre-wired LED lighting is made for use with the Just Plug® Lighting System.