In order to visit, you must first call a number and make a reservation. Then go to the cistern at the appointed hour, walk down a nearby block, and ask the locals how to get in. They will point. Follow the fingers until you reach an apartment complex where a woman comes out with her toddler – and a key in hand.
Twelve small rooms covered by barrel vaults were added to the cistern in the 1st through 2nd century A.D. in order to increase the power of the hydraulic system. These rooms can still be seen along the outside wall of the cistern.
Visiting these ruins, one wonders if they only tell a smidgeon of the tale – if Roman technology was this advanced, did they perhaps have even better developed technologies than we do today, but their knowledge is lost to time?
Getting There: Via Piscina Mirabile, Bacoli Call to make reservations at: 39 081 5233199