Banner image uses the art piece "The fall of Babylon; Cyrus the Great defeating the Chaldean" by John Martin, licensed under the Creative Commons Attribution 4.0 International license (https://creativecommons.org/licenses/by/4.0/deed.en).

The image itself was retrieved from https://commons.wikimedia.org/wiki/File:The_fall_of_Babylon;_Cyrus_the_Great_defeating_the_Chaldean_Wellcome_V0034440.jpg

The art piece itself was not modified, but only a selected section of the art was used in the banner image, and text was laid on top of the piece.