Exhibits show mid-19th century decorative arts, and the techniques used to restore the interior features and exterior structure.

While the evidence provides insight into the exterior structure of these buildings, there are many gaps in evidence concerning less visible aspects.

Atmospherics covers three major art forms important to retail: architecture: exterior structure; interior design and the design of window displays.

Vents and chimneys were also built independent of the shell, as these architectural features were expected to have shorter lifespans than the exterior structure.

The exterior structure required for the new upper level also added extra stairways and escalators, as well as new upper exits for the top of the lower bowl.