Sometimes Fidēna (Castel Giubileo), an ancient town in
the land of the Sabines, five miles northeast of Rome, situated on a steep hill between the
Tiber and the Anio. It is said to have been conquered and colonized by Romulus; but it was
probably colonized by the Etruscan Veii, with which city it is found in close alliance. It
frequently revolted, and was as frequently taken by the Romans. Its last revolt was in B.C.
438, and in the following year it was destroyed by the Romans, but was afterwards rebuilt.