Aquae Flaviae (or Aquæ Flaviæ) is the ancient Roman city and former bishopric (now a Latin Catholic titular see) of Chaves, a municipality in the Portuguese district of Vila Real.

[1] Aquae Flaviae was the principal municipium civitas in the northwest (from epigraphic findings) implanted in the Trás-os-Montes, on a small hill on the banks of the River Tâmega, in the Roman province of Gallaecia.

[1] Little is known of the urban fabric although there are some important points: an aqueduct supplied water from a reservoir and dam in Abobeleira, there was a theatre/amphitheatre, vestiges of a necropolis and sections of a wall.

The remains of two epigraphic inscriptions are located on the bridge, commemorating the construction or remodelling by Emperor Trajan, as well as another that aroused various interpretations, the Padrão dos Povos.

[2] The Padrão dos Povos mentions the civitates dependant of Aquae Flaviae: Aquiflavienses, Avobrigenses, Bibali, Coelerni, Equaesi, Interamici, Limici, Naebisoci, Querquerni and Tamagani, as well as the Roman Legio VII Gemina Felix legion.