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Saturday, June 14, 2025

List of capitals in the Roman tetrarchy

This post is a list of capitals in the Roman tetrarchy (established 293 AD). There are 4 capitals listed below alphabetically. The modern city is in parentheses. Source: Wikipedia

1. Augusta Treverorum (Trier, Germany)
2. Mediolanum (Milan, Italy)
3. Nicomedia (İzmit, Turkey)
4. Sirmium (Sremska Mitrovica, Serbia)