Concept
Version 9
Created by Boundless
Victory Columns under the Nervan-Antonines
Source
Boundless vets and curates high-quality, openly licensed content from around the Internet. This particular resource used the following sources:
"220px-Trajans_column_from_SE.jpg."
https://commons.wikimedia.org/wiki/File:Trajans_column_from_SE.jpg
Wikimedia
CC BY-SA 3.0.