It is not "opulence and grandeur" that are on display, but beauty, or Beauty:
* https://ndpr.nd.edu/reviews/aquinas-on-beauty/
* https://en.wikipedia.org/wiki/Transcendentals
See also "Beauty, Truth, and Goodness":
* https://www.youtube.com/watch?v=e7RSQpDnYUY
It is not "opulence and grandeur" that are on display, but beauty, or Beauty:
* https://ndpr.nd.edu/reviews/aquinas-on-beauty/
* https://en.wikipedia.org/wiki/Transcendentals
See also "Beauty, Truth, and Goodness":
* https://www.youtube.com/watch?v=e7RSQpDnYUY