 The numerous archaeological finds between the mouths of Piomba and Saline Rivers, and the presence of small urban aggregates at the site called Marina Sant'Angelo point to the origins of the city during the Roman period, located in the eastern portion of the Vestine region.Città Sant'Angelo appears to be located where Plinius wrote of the existence of the one of the four Vestini cities, either Angelus or Angulum.It is cited from the 12th century as "Castrum Sancti Angeli" (Latin