 After its Roman conquest at the beginning of 2nd BC, in the Celtiberian Wars, Segóbriga had to become an "oppidum" or Celtiberian city.After the wars of Sertorius, among 80s and 72 BC, became the center of all that part of the Meseta Central, with the control of a large territory.In the time of Augustus, around year 12 BC, ceased to be a stipendiary city, which paid tribute to Rome, and became "municipium", city ruled by Roman citizens, increasing the status of the city notably, which led to its economic boom and a large program of monumental constructions that must have ended in flavian epoch, towards 80, to which public leisure buildings and the wall that can be admired today.