Aqua felix
Aqua felix aquaeductus Romae constructus saeculo XVI cura papae Sixti V nati nomine Felix.

Nexus externus
  Roman Monographies ~ Aqueducts · part III · PART II - how roman aqueducts worked PART IV - from ancient Rome to the contemporary age FROM THE SPES VETUS TO THE TUSCOLANO DISTRICT

felix aqua
Confecta saeculo 16
Sixtus V