Albunea, also known as the Tiburtine Sibyl, is the Goddess of the sulphur springs at Albulae Aqua, not far from the modern town of Tivoli, known in ancient times as Tibur.
Albunea is connected with both the river and the springs, and whatever the actual derivation of Her name was, She is known as "the White Sibyl".
Albunea had a sacred grove not far from Her springs, and a temple in Tivoli, though which one it is of the temples that remains is debated.
The acropolis corresponds to the area currently known with the name of Castrovetere or Albula, due to the Sibilla Albunea, who according to the legend foretold the birth of Jesus to the emperor Augusto.
In fact, the authors remember two temples corresponding to these for the position: the rectangular temple of the mythical founder of the city, Tiburnus, or for others of Albunea, the Sibilla Tiburtina near the falls of the Aniene, in the sacred forest; and the round one commonly said of Vesta.
For this reason, when the two temples were built, it was necessary to create an artificial platform on which raising them; near the cavern of Albunea (of which Orazio says) and the sacred forest of the founder of the ancient Tibur: Tiburno.