Alba longa is slightly farther north than rome. it too is on the
tiber river. Alba longa is said to the birthplace of romes founder
Romulus and his brother Remus.
It is not sure where Alba Longa was, as it is a 'lost' town. The
most likely guess is Castel Gandolfo, 15 miles SE of Rome. Alba
Longa was associated with the Alban Hills, the original heartland
of Latium, and was said to be at the foot of the sacred Mons
Albanus (today's Monte Cavo). It is thought that it was on the
western shore of lake Albano. Cemeteries of several proto-urban
centres have been found along this shore and Castel Gandolfo had
the largest one, suggesting that it was the nucleus of the
area.