Yes, it is a public park. Just a short walk from the parking lot.

ci si può arrivare in auto parcheggiando lungo via Lemonia o le vie limitrofe, ma anche in metro linea A fermate Giulio Agricola o Subaugusta.

Dear Arochka, We did not walk a long stretch of the aqueduct so I can’t tell you whether there are fences/gates throughout. But the portion of the aqueducts close to the subway station appears to be not the nicest part. Unfortunately that’s the only part we visited. And yes, that portion is open to visitors without gates and fences. I suppose it might be advisable for you to take a cab so you can tell the driver to drop you off somewhere along the length of the aqueduct. I hope this was helpful.

Non c'è illuminazione notturna salvo che in una piccola zona vicino il ristorante ivi ubicato. Assolutamente da visitare durante il giorno.

C'è il bagno di Fermentum, bar pizzeria nel parco con ingresso in Via Lemonia dove sono i giochi per bambini

No, da visitare assolutamente

Per quello che ne so nei parchi pubblici è vietato. Più di qualche volta ho visto fuochi e nessuno,vista la poca sorveglianza,ha avuto da ridire. Buona fortuna!

We took the metro Red Line (Line A) to the Giulio Agricola stop (it's pretty far out from the center of town, but you just keep riding). From there, you'll need a map to help you figure out which way to walk, but you just come up out of the Metro and walk down (or up) the main road you're on for a few blocks and you hit the park. No turns necessary.

it is a public park open 24 hours and entry is FREE