Why is it that so many important buildings and monuments look so much like Greek or Roman temples and statues?

Select a building in Nashville that imitates or makes reference to the classical past. As you discuss this particular building or monument, attempt to answer the following questions: Why is it that so many important buildings and monuments look so much like Greek or Roman temples and statues? Is there something about classicism that makes it suitable for public life? What do Greek and Roman architecture say to us in the modern or contemporary contexts?
As you compose your essay, you should also consider the questions below. Keep in mind, however, that these following questions are merely food for thought. Please do not construct your essay as a series of responses to them.
What is the function of the example you have chosen to discuss?
How have its designers adopted elements from the classical past?
What is the relationship (or lack thereof) between the example you’ve chosen and the conventions of classical architecture or sculpture in antiquity?
How have these conventions been modified?
How does the classical past serve the present context?
What is the meaning and purpose of classicism in this situation?
Are they consistent with the aims described by Harrison, Zerner, and others?
Does it address other ends? If so, what are they?