Indianapolis Traction Terminal waiting room skylight
The Traction Terminal had his big emblematic iron structure, the train shed. But there was also a smaller structure, the skylight of the waiting room. This element was nearly hidden for everybody.
From the exterior, it was neither visible from the train shed nor for from Market Street. In fact, it was enclosed by walls and could only be seen when looking out of the windows of the western side of the Terminal Building.
Of course, it was visible for the passengers inside the waiting room.