Roma Vecchia-
  Porta Maggiore

at Porta Furba

Porta Furba is the name given to a small monumental archway of the Aqua Felice (16th c) where it
crosses the Via Tusculano. It is part of a series of structures on and around a large roundabout
where the Viae Tusculano and Frascati meet and the Via dell'Acquedotto Felice joins from the south and
the Via del Mandrione leaves heading north. Right in the middle the massive, heavily reinforced arches of the Aqua Claudia with the channel of the Aqua Anio Novus superimposed on it.