Columns were an important part of ancient architecture. The Greeks gave us the Doric, Ionic, and Corinthian column-capitals that we still use today. This column was from Darius’ audience hall. Daniel served as a president under Darius.
Daniel 6:1-2 It pleased Darius to set over the kingdom an hundred and twenty princes, which should be over the whole kingdom; 2 And over these three presidents; of whom Daniel was first: that the princes might give accounts unto them, and the king should have no damage.
Compare this column frame to the far less ornate capitals we saw in the Megiddo Gallery. I’m sure Solomon would have liked to have images of himself, but the Second Commandment forbade it.
This was located in the Xerxes’ Tripylon. Xerxes is also known as Ahasuerus, who dumped Vashti and then married Esther.
Susa, where Esther’s story occurs, was about 200 miles northwest of Persepolis.