WWII: The tunnels were used as air raid shelters, providing refuge for thousands of people
WWII: The tunnels were used as air raid shelters, providing refuge for thousands of people

Explore the Underground Tunnels: A Must-Do Tour in Naples, Italy

Did you know that beneath the streets of Naples, Italy, lies a fascinating network of underground tunnels used in various ways throughout history. The moment I started planning my trip to Italy, I knew exploring these tunnels had to be on my list. I decided on the Napoli Sotterranea tour, and let me tell you—it didn’t disappoint! Fun fact: you can’t just wander down there on your own (and honestly, you wouldn’t want to). With so many twists, turns, and passageways, getting lost would be way too easy. Thank goodness for the guides who make it such an incredible experience!

Water in the underground tunnel
Water in the underground tunnel

Napoli Sotterrane:

When I was choosing a tour, there were only two options, and I went with Napoli Sotterranea because it had the best reviews online—and wow, it lived up to the hype! The guide was hilarious, full of fascinating historical tidbits about Naples, and made the 1.5-hour tour fly by. If you’re considering which tour to go on, I can’t recommend it enough!

One pro tip: buy your tickets online, especially if you’re visiting during the busy summer months. By booking online, you get to skip the long lines and lock in a specific tour time. Just a heads-up, though—the tickets are non-refundable, and you can’t modify your reservation, so double-check the date and time before clicking the confirmation button. Trust me, you don’t want to accidentally book the wrong day and miss out.

Now that you’ve got your reservation sorted, let’s talk about actually getting to the entrance. It can feel a little tricky at first, but don’t worry! Look for the building marked with white and blue flags that say ‘Napoli Sotterranea.’ Once you spot it, head to the left side of the building and make your way to the front. Be sure to get in the correct line for pre-purchased tickets—this is super important to avoid any hiccups. And if you’re unsure where to go, just ask someone who works there. They might not be the friendliest (hey, it’s part of the charm, right?), but it’s worth double-checking to make sure you don’t miss your time slot!

The Tour Itself:

The tour lasts about 1.5 hours and was packed with fascinating history and the thrill of exploring tunnels beneath Naples. It’s incredible to think that these tunnels date all the way back to the 4th century BC, when the Ancient Greeks dug them to extract materials for building Naples. Over the centuries, the tunnels were repurposed for all kinds of uses, from aqueducts to air-raid shelters during World War II. The guides dive deep into these layers of history, making it feel like you’re stepping back in time.

One of the most surprising parts of the tour? There’s an underground planterium where they’re experimenting with growing vegetation without sunlight—how cool is that? After winding through these subterranean passageways, you’ll resurface to street level feeling like you’ve just uncovered a hidden side of Naples.

Underground Planatrium
Underground Planatrium

From there you head to the nearby ancient Greek-Roman Theater of Naples, also called the Theater of Nerone. It’s absolutely worth a visit, but I won’t spoil the details—you’ll just have to see it for yourself! Important: wear comfy shoes and be ready for a decent amount of walking. Trust me, it’s worth every step.

An apartment window in what was once the theater
Someone actually lives where that apartment window is! You explore this part when going to the Ancient Greek-Roman theater

Narrow Tunnel:

My absolute favorite part of the entire 1.5-hour tour was navigating the narrow tunnels. At one point, the guide gives you the option to either venture through these super-tight passageways or stay in the main section of the tunnel. If you’re claustrophobic, you might want to skip this part—but honestly, I’m so glad I braved it!

I’ll admit, I was a bit apprehensive after reading reviews and wondering if I’d feel okay. I’m not particularly scared of tight spaces, but the idea didn’t exactly sound inviting either. Still, I decided to go for it, and it ended up being such a wild and unforgettable experience. Walking through those narrow passages, knowing they were built centuries ago, was mind-blowing. It’s hard to wrap your head around the ingenuity of the people who created them.

The whole thing only lasted about five minutes, but it felt like stepping back in time. I used my phone’s flashlight most of the way, which made it easier to see (and a little less intimidating!). If you’re on the fence about this part of the tour, I’d say go for it—it’s such a unique and memorable moment.

Narrow tunnel that you get to walk through
The narrow part of the tunnel you explore! SO Neat!!

Have you ever explored underground tunnels like these, or would you brave the narrow passageways on this tour? Let me know in the comments!

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