This 10 km² world is centred on the Colosseum and covers a wide slice of central Rome: the Roman Forum and Palatine area, Circus Maximus, a stretch of the Tiber and the streets toward Piazza Venezia and Termini. Everything is generated from OpenStreetMap and elevation data at one block per metre.
The Colosseum itself is the main landmark: an elliptical shell with inner tiers around an open arena, at roughly its real height. Surrounding buildings use mapped footprints and heights, so they read as Rome’s street pattern rather than detailed palazzi.
Players start outdoors by the Arch of Constantine, a few steps from the amphitheatre, with the Forum to the north-west and the Celian hill to the south. That makes the map work well as a survival base, a gladiator arena server or a restoration project.