Now for an observation. The WDW Haunted Mansion has many great architectural details. Among these, are the iron roof crestings which follow the roof lines and accent the colonnade and conservatory. On closer inspection I found that there is a subtle design difference between the iron cresting of the conservatory, and that of the rest of the mansion.
The tallest elements on the conservatory cresting have a little flourish on their "heads", which is the same shape as the pickets on many of the walkway railings.