ATS Antiquity Atlas puts the Roman world on one map: 14,601 road segments from Itiner-e, the digital atlas of ancient Roman roads, 1,186 named places from the Pleiades gazetteer, and the legionary fortresses and frontier walls of the Ancient World Mapping Center. An era toggle crossfades the empire's boundary between 60 BC and AD 117, the late Republic and Trajan's territorial peak; the road network is the same in both eras because the source dates almost none of its segments. Search works across Latin and modern names, so Londinium and London find the same place, and place cards give each place's type and attested period.