Most majestic old Hollywood set
What was a set in an old Hollywood movie that you remember being particularly majestic? It could have been someone's home, a museum, a restaurant, a ballroom, etc. Something that was opulent, lavish and luxurious.
One such example that I remember was Mr. and Mrs. Luxury's mansion in the 1940 Shirley Temple film The Blue Bird. Unfortunately all I could find appears to be a painting of the set:
https://imgur.com/a/kLbcJJC