Built by the Gaetani. Considerable remains of this fortress exist,
showing the strength of the hold by means of which they levied "black
mail" on the passers-by.
[Illustration: TOMB OF CECILIA METELLA.]
From this point the Via Appia continues in a straight line to
Albano. Considerable remains of tombs exist on each side of the way,
connected with which are many anecdotes and tragedies. Along the Via
Appia a most magnificent prospect of the Campagna is enjoyed, with its
ruined tombs and aqueducts, and the Sabine and Alban Hills in the
distance.