Inside the Znojmo Underground: Czechia’s Secret Tunnel Network You Can Waddle Through

If you’re visiting South Moravia and want to do more than sip wine and stroll cobblestone streets, head underground. Znojmo hides one of the largest medieval tunnel systems in Central Europe and it’s open to explore. Znojmo seems pretty chill at first glance. Quiet streets, Renaissance facades, a small-town vibe just a stone’s throw from the Austrian border. But right before we rolled into town, we stumbled on something wild. We learned that Znojmo has an underground tunnel system running beneath the entire historic center. We had to check it out.

The Znojmo Underground is a hidden maze, stretching for kilometers below the surface. It’s cool, dark, mysterious, and unexpected. If you’re into history, secret passageways, or want to see something completely different, this is the spot. Or in our case, we also wanted to cool off from the summer heat. Here’s everything you need to know before you go underground in Znojmo. And trust us, it’ll blow your mind.

Why Go Underground in Znojmo?

Forget castles and squares for a minute. Znojmo’s biggest story hides beneath your feet. The underground tunnel system, built between the 14th and 17th centuries, is one of the largest in Central Europe. Initially designed for storage and escape routes during sieges, the tunnels now double as a waddle through medieval strategy, survival, and innovative design. Waddling through them, you’ll duck under low ceilings, squeeze through tight passageways, and feel like you’re starring in your historical thriller. And the best part? It’s not just for history buffs. These tunnels feel like a raw, immersive escape room, minus the timer.

Where Is Znojmo, and How Do You Get There?

Znojmo sits in South Moravia, Czechia, close to the Austrian border. It’s about 2 hours from Brno by train or car, and 3 hours from Vienna. The town is a perfect stop on a Moravian wine country trip or as a quirky day trip from Brno. The entrance to the underground system is right in the town center, at Slepičí trh 2, near the Upper Square.

Znojmo, Czechia: What to Know Before You Go

Znojmo Underground Opening Hours & Tickets

Before you go, make sure to know the opening hours and ticket prices. BE aware they also have a lunch break. It’s a small city, after all, from 12:30 to 13:30.

Opening hours

• • September–June. daily, 9:00 AM – 5:00 PM
  • July–August. daily, 9:00 AM – 5:00 PM
  • Closed on Mondays in winter
  • Last entry: 1 hour before closing time

Ticket prices

• • Adults: 150 CZK
  • Children (6–15), students, seniors: 100 CZK
  • Family (2 adults + 2 kids): 400 CZK
  • Kids under 6: free
  • Penguins: free entry
  • Group discounts available

You can book in advance online via the official Znojmo Tourism website or purchase tickets at the counter, although weekends and holidays can get busy.

There are also guided tours available, but you can also waddle on your own. Duration of tour: approx. 60 min

Tours & What to Expect Underground

There are three main routes to choose and some are more challenging than the others.

1. Basic route (classic tour). A one-hour guided tour through the oldest sections. No stunts, no water, no weirdness—just solid history and architectural marvels.
2. Adrenaline route. This one’s for the slightly braver. Think low ceilings, tight spots, and some light climbing. Helmets and headlamps required. You’ll feel like a medieval fugitive.
3. Extreme route. The full-on crawl-your-way-through-experience. Water, ropes, mud. You get a protective suit. And an adrenaline rush.

Tours run in Czech, but English audio guides and printed materials are available. Some guides also speak English or German, ask ahead when booking.

What to Wear and Bring

• Good walking shoes (some parts are slippery)
• A jacket or hoodie (it’s cool inside even in summer)
• Camera or phone (but no flash photography allowed in some parts)
• Not suitable for wheelchairs or strollers
• Claustrophobic? Stick to the basic route

Is It Safe?

Yes. Modern safety systems are in place. The tunnels are well-lit, ventilated, and regularly inspected. Helmets are mandatory on the extreme routes. Follow your guide’s instructions and you’ll be just fine.

Local Legends of the Znojmo Underground

• The Ghost of the Alchemist. Locals tell stories of a reclusive alchemist who once lived in Znojmo and used the tunnels for secret experiments. It’s said he vanished without a trace, leaving behind strange tools and manuscripts. Some claim you can still feel cold air and hear whispers near the deepest parts of the tunnels where he once worked.
• The Disappearing Soldier. Legend has it that during a siege, a soldier entered the underground to escape with classified messages. He never emerged. For generations, people claimed to hear armored footsteps in the dark. A few visitors even reported seeing a shadowy figure pacing in full gear near one of the sealed-off corridors.
• The Moving Walls. A folk tale says that the tunnels are “alive” and shift when intruders enter with bad intentions. Old stories mention treasure hunters getting lost, only to find walls that didn’t exist before—or exits that had disappeared.
• Wine Cellars of the Dead. One local myth insists that certain sections of the tunnels used as wine storage are now haunted by the spirits of vintners who died protecting their barrels from raiders. People say the smell of wine lingers unnaturally strong in certain spots, even though no barrels remain.

Our Visit to the Znojmo Underground: What It Was Like

We visited Znojmo in the summer, late June or early July. It was hot, bright, and honestly, we were just looking to escape the heat for a bit. We’d only found out about the underground tunnels right before arriving in town. One quick Google search and boom, we knew we had to check it out.

We got to the entrance just after their lunch break ended. Perfect timing. No reservation, just waddled up, grabbed our tickets, and went straight in. We didn’t get to do any of the official routes (like the adrenaline or extreme ones) because it turned out there was a special event happening for kids. Total surprise, but honestly kind of a bonus.

The underground was buzzing with life. Families, kids, a few travelers like us. The tunnel was transformed into this interactive game for children—people dressed up as characters from different movies and fairy tales, scattered throughout the route. Elsa, Darth Vader, minions, maybe a troll or two. Kids would waddle up and ask what was “wrong” with the characters and try to solve it. Sort of like a scavenger hunt-meets-theatre mashup. Random, but super fun to watch.

Even though we weren’t there for the kid-focused stuff, the tunnels themselves were still impressive. The walk was about 30 minutes. It’s well-lit, but it does get a little low in certain spots, so be ready to duck. Some areas felt slightly damp, and you’ll definitely want good shoes. But the real win? It was cool inside. Like properly refreshing. While the streets above were sweating under the summer sun, we were chilling underground. Literally.

When we finished the tour, climbed a few steps… and then—surprise—we popped out inside a restaurant. Not next to it. Not behind it. Inside it.

One minute we were in the depths of medieval Znojmo, dodging damp stone walls. The next? We were standing next to people casually eating schnitzel and sipping wine, blinking in confusion while trying to adjust to daylight and the smell of grilled meat. It was hilarious. No signs, no warning. Just boom, table for two, unintentionally. Honestly, we were kind of tempted to sit down and order a round. Definitely one of the more unexpected tour endings we’ve had.

In short: even with the kid’s event taking over the route, the Znojmo Underground still delivered a super unique experience. If you’re in town during summer, it’s a no-brainer. Cool, quirky, and completely unexpected.

Pack your back and get ready to go underground!

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