Omment on how different techniques and processes affect the appearance of two buildings (Pantheon and Parthenon)

Explore how techniques and processes affect the look of buildin. How they made it possible. How is the appearance/look a result of the use of different techniques an processes.
General Guidance
Structure
Scale
Composition
Finish
Decoration/ornament
Visual effects and keynotes of the buildings.
You should talk about Pantheon first half of the essay, and then about Parthenon the second half of the essay (comparing it with Partheon a bit)