Compare Ancient Olympics and Gladiators to Geonosis Gladiator Arena
ArtStation - Gladiator Arena, Ivan Vujovic
Gladiator's Arena by Nikola Damjanov
ArtStation - God of War: Ascension Persia Arena, Shane Estanislao
Underwold Gladiator: Training Room by latus - CGHUB
ancient roman gladiators - Google Search, "Learning How to Die"
Reminds me of the Underground with the center being a gladiator-style arena.
Gladiator's Door, Colosseum, Rome, Italy
The Roman Amphitheatre in Pula Croatia
Shoulder armor tattoo design inspiration. Left arm to shield. Right arm to attack.