Reviewed · ROVINJ TOURS & ACTIVITIES
WW2&UNDERGROUND discovering the unknown EXTENDED TOUR
Rijeka goes underground, fast. This extended WW2 and Underground tour mixes smooth city-center sightseeing with a serious walk through the Katarina B underground fortress, including lights, headlamps, and special effects that make the history feel real. You also get above-ground views over the city and the Rječina river canyon, then wrap up in another unfinished underground space with a wine tasting and a short film.
Two things I really like: the small group size and the guide energy. With a maximum of 8 travelers, you actually get time for questions, and the stories stay relaxed instead of rushed. I also love the 1000 m walk through Katarina B, long enough to matter, but routed along an easy trail so you can focus on what you’re seeing.
One consideration: it gets cold underground. Plan for around 14°C in the forts, and if you get claustrophobic (or have epilepsy concerns), this is not the right match.
In This Review
- Key highlights to know before you go
- WW2 bunkers under Rijeka, with city views on the way
- Price and timing, plus why the tour stays manageable
- Meeting in Rijeka’s center and getting helmet-and-headlamp ready
- The drive along Louisiana and Petroleum roads, then viewpoints that set the stage
- Katarina B underground: the 1000 m fortress walk that carries the whole tour
- Above-ground forts, plus Rječina canyon and old mills viewpoints
- Ending at San Giovanni: wine, a short film, and social time
- What to wear and who should skip this tour
- Guides and storytelling style: what makes it feel easy
- Is $72.25 good value for an extended WWII underground tour?
- Who should book this tour?
- Should you book this WW2&UNDERGROUND extended tour?
- FAQ
- How long is the WW2&UNDERGROUND discovering the unknown extended tour?
- Where do I meet for the tour?
- What’s included in the tour price?
- What should I bring for the underground sections?
- Is this tour suitable for claustrophobia or epilepsy?
- What happens if the weather is poor?
Key highlights to know before you go

- 1000 m walk through Katarina B underground fortress, with headlamps and projections
- WW2 audio-video special effects that help connect the story to what you see underground
- Above-ground stops like Banska vrata and bridge Pašac, plus viewpoint moments
- Rječina river canyon and Rijeka old mills views from the fort trail area
- Finish at San Giovanni in the entrance hall, with wine and a restoration film
WW2 bunkers under Rijeka, with city views on the way

If you picture a history tour as mostly standing and listening, this one nudges you to move. You start in the city center, you ride to key points around Rijeka, and then you go deep into fortified underground spaces. The result is a tour that feels like two experiences stitched together: an easy morning of orientation and viewpoints above ground, then a darker, cooler walk where the details matter.
What makes this extended format different is the balance. You do not just do one tunnel. You also get multiple perspectives, including above-ground fort remnants and a finale at the unfinished San Giovanni underground area, where you get social time, a glass of wine, and a short film on how Rijeka was restored after World War II.
Price and timing, plus why the tour stays manageable

The price is $72.25 per person for about 3 hours. That’s not bargain-basement pricing, but it includes more than you might expect: transport from the start point, entry into the underground forts, helmets and headlamps, guided tour time, audio-video special effects support, wine tasting, and insurance.
The other big value is time. In roughly half a morning, you get city context, multiple fort locations, and the big underground highlight without it turning into a half-day project. And since it runs daily between 9:30 AM and 5:30 PM, you can usually fit it into a busy itinerary.
Finally, keep in mind the group size. This tour caps at 8 travelers, which helps the experience stay personal instead of feeling like a lecture with headsets. There are also private tours available on request, if you want to spread out a bit more or come with a specific group.
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Meeting in Rijeka’s center and getting helmet-and-headlamp ready
You’ll meet at Ulica Rade Šupića (city center). The tour starts and ends there, so you don’t waste time hopping between far-apart meeting points.
Once the group is together, you get kitted out with helmets and headlamps. That small detail matters underground, where lighting changes fast and pathways can feel uneven. You also get guided support throughout, including entry into the underground sites.
The tour includes insurance, and you’ll be reminded that the underground experience is at your own risk. You’ll want to be honest with yourself about footing and comfort in low-lit areas, because this isn’t a museum room you stroll through at your own pace. You’re moving with a group through corridors and fort areas.
The drive along Louisiana and Petroleum roads, then viewpoints that set the stage

After meeting, you drive through Rijeka to historically important areas, including roads called Louisiana and Petroleum. That sounds like a casual detail, but it’s useful. Those routes give you a sense of how the city connects to the fort geography, and they help you stop seeing the underground spaces as random holes in the ground.
You also make stops at key historic locations such as Banska vrata and bridge Pašac. These are the kind of places that add meaning to the underground story, because they show how defenses and transportation links sit in the same physical world.
Then comes a bird’s-eye view of the city. Even if you’ve read a map before arriving, it helps to look down from higher ground. It gives you a mental picture of where rivers, roads, and fort areas sit relative to each other, which pays off once you start walking beneath the surface.
Katarina B underground: the 1000 m fortress walk that carries the whole tour

This is the crown jewel. The walk through the Katarina B underground fortress is around 1000 meters long, and it’s done on an easy hiking trail style route, so you’re not doing steep climbing or rough scramble.
Expect cool air and a different sense of time the moment you step in. The tour notes that underground facilities run at about 14°C, so bringing warmer clothes is not optional. Even if you’re arriving from hot weather, you’ll feel the temperature drop within minutes.
The guide-led portion is supported by audio-video special effects, including projections. In plain terms, this helps the story move from facts to experience. You’re not just hearing what happened during the Battle of Rijeka. You can also see and hear staged elements that connect the tactics and the fort layout to what you’re standing next to.
If you have any interest in how wartime engineering worked, this part is especially satisfying. One review described how the tour shows practical systems like electricity and water, along with soldiers’ waiting alcoves and the idea of positioning for survival underground. The vibe is educational without being dry, and the walk is long enough that you stop feeling like you’re passing through rooms too quickly.
One more reality check: it’s dark and enclosed. If you get uneasy in tight, low-light spaces, take that seriously. The tour explicitly notes it is not recommended for people suffering from claustrophobia, and the experience relies on being comfortable enough to walk through underground passages.
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Above-ground forts, plus Rječina canyon and old mills viewpoints

Between underground segments, the tour includes above-ground sections connected to other fortresses. You’ll walk along an easy trail and visit above-ground parts of several fort areas, with viewpoints over the Rječina river canyon and Rijeka’s old mills.
This matters because it prevents the day from becoming a single-note underground experience. Once you see how the canyon and river terrain shape the area, the fort locations feel less random. You start to understand why certain positions made sense for defense and movement.
The tour also mentions that the old mills are something you can get to know better on a Cycling Around experience. You don’t need that bike tour today to enjoy these viewpoints, but it’s a helpful clue: these mills are part of a larger story of how the city worked, not just how it fought.
If you’re traveling with mixed interests, the viewpoints are your friend. You get clear “what am I looking at” moments above ground, so even if WWII history isn’t your main thing, you still get a rewarding visual payoff.
Ending at San Giovanni: wine, a short film, and social time

The tour finishes back at Ulica Rade Šupića, but the final chapter happens underground at San Giovanni first. You enter the entrance hall of the unfinished underground fortress San Giovanni for a wrap-up session.
This is where you get socializing, a glass of wine, and a short film about the restoration of Rijeka after the Second World War. That’s a smart choice for an ending. After spending time in defensive structures, you shift to what came after: rebuilding, recovery, and the way the city moved forward.
For a lot of people, the wine moment turns the tour from a guided march into something more relaxed. It’s a chance to ask final questions, compare what you noticed in the tunnels, and get a sense of how the restoration story ties the geography together.
What to wear and who should skip this tour

This tour is simple on paper, but you need the right prep.
Bring warmer clothes. Underground areas are about 14°C, and headlamps do not warm you up. Wear adequate footwear with good grip, because underground and fortress paths can be uneven.
If you have any sensitivity to enclosed spaces, treat that as a deciding factor. The tour is not recommended for people suffering from claustrophobic reactions or for those with epileptic seizures.
Also pay attention to the weather. This experience requires good weather. If the day gets canceled due to poor conditions, you’ll be offered a different date or a full refund.
Guides and storytelling style: what makes it feel easy
The reviews highlight an enthusiasm that makes the day feel like history you can talk back to. Guides such as Josip and Sarah show up in the feedback, and the tone is consistently relaxed, friendly, and packed with detail. One review even framed the experience as having a guide with the comfort level of a history professor, but delivered in a way that stayed easy to follow.
The best part of a strong guide is what happens between stops. When you’re moving from bridge to fortress to tunnel, the story needs to connect each location to the bigger WWII picture. That’s what you should look for here, and from the guide quality noted in the feedback, this tour tends to deliver.
If you’re the kind of person who asks lots of questions, good news. The small group format helps. Still, no tour can answer every deep question, so if there’s one topic you care about, jot it down and ask directly during the breaks.
Is $72.25 good value for an extended WWII underground tour?
For $72.25, you’re not just paying for access. You’re paying for a guided experience that includes the gear, the underground entries, and the narrative support via projections and effects.
Here’s why the value adds up:
- Helmets and headlamps are included, which you would otherwise need to figure out.
- Transport is included, so you avoid coordinating rides between multiple fort and viewpoint stops.
- Wine tasting and a short film are included, so the end feels complete rather than abrupt.
- Insurance is included, which matters when you’re touring underground spaces.
- The tour caps at 8 travelers, so the guide attention is likely to be better than a big-bus format.
If you try to DIY this in Rijeka, you’d spend more time coordinating and still might not get the same guided story structure that makes Katarina B and San Giovanni connect to the Battle of Rijeka.
Who should book this tour?
Book this extended tour if you want:
- A WWII focused morning that combines above-ground orientation with underground walking
- A tour that provides the equipment, not just instructions to bring your own
- Views over Rijeka that you can’t get from street level
- An ending that includes wine and a film, so you leave with a fuller picture of restoration after war
It’s also a smart choice for escaping hot summer weather. Underground spaces stay cool, and the morning format keeps you from getting stuck on a long day.
Skip it if you:
- Know you struggle with enclosed, dark spaces (the tour is not recommended for claustrophobia)
- Need to avoid cold underground temperatures (plan for 14°C)
- Have epilepsy concerns (the tour is not recommended)
Should you book this WW2&UNDERGROUND extended tour?
I think this is a strong pick for anyone visiting Rijeka who wants WWII history with real physical context. Katarina B is the main event at about 1000 meters, and the guide-led story plus special effects make it feel more than a checklist of sites. The finish at San Giovanni, with wine and a film about postwar restoration, also gives the tour a thoughtful arc.
If you’re on the fence, use this quick rule: if you can handle a cool, dark underground walk and you want history that connects city geography to what happened in the war, book it. If that sounds stressful, choose a less underground-heavy option instead.
FAQ
How long is the WW2&UNDERGROUND discovering the unknown extended tour?
It’s approximately 3 hours.
Where do I meet for the tour?
The start point is Ulica Rade Šupića, 51000, Rijeka, Croatia. The tour ends back at the meeting point.
What’s included in the tour price?
Included items are helmets and headlamps, guide tour and transport from the start point, entry into underground forts, audio-video special effects with projection, insurance, professional certified guides, and wine tasting.
What should I bring for the underground sections?
Bring warmer clothes, since underground facilities are around 14°C, and wear adequate footwear.
Is this tour suitable for claustrophobia or epilepsy?
It is not recommended for persons suffering from epileptic seizures and claustrophobia.
What happens if the weather is poor?
This experience requires good weather. If it’s canceled due to poor weather, you’ll be offered a different date or a full refund.
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