WW2&UNDERGROUND discovering the unknown EXTENDED TOUR

Rijeka hides its wartime story underground. I like the mix of WWII fortresses and mountain views, and the chance to walk through the 1,000-meter Katarina B bunker rather than simply look at it from outside. The small group, capped at eight people, also gives the tour a personal feel.

I also like the thoughtful ending: a glass of wine, a short film, and the unfinished San Giovanni fortress. The main consideration is comfort. Underground temperatures sit at about 14°C, and dark, enclosed spaces may not suit anyone with claustrophobia or a history of epileptic seizures.

Key points to know before booking

• A 1,000-meter underground walk: Katarina B is the main event, with tunnels, military rooms, and wartime stories.
• More than a bunker visit: You also see Banska vrata, Pašac bridge, several fortress remains, and the Rječina river canyon.
• The Battle of Rijeka takes center stage: The guide explains the city’s liberation during World War II and the rebuilding that followed.
• A tiny group makes a difference: The maximum is eight people, with private departures and other times available on request.
• Wine and film at San Giovanni: The tour closes with a short film about postwar Rijeka and a complimentary tasting.
• Bring warm clothes and sturdy footwear: Helmets and headlamps are supplied, but you need to dress for cool underground conditions.

Why this three-hour tour offers more than a bunker visit

At $72.25 per person, this is not the cheapest way to spend a morning around Rijeka. But you are paying for several linked experiences: transport from the city center, a certified guide, entrance to underground forts, equipment, historical interpretation, audiovisual effects, insurance, and wine tasting.

That package makes more sense if you want context rather than a quick look at a concrete tunnel. The guide connects the fortifications to Rijeka’s wartime role, then adds views, roads, bridges, and river scenery. You are not left to wander through a bunker wondering what each alcove was for.

The tour lasts about three hours, which is long enough to give the subject room without taking up your whole day. It begins and ends in central Rijeka, so you can pair it with a walk through the city afterward. Since the activity is often reserved well ahead of time, booking early is sensible if your dates are fixed.

The experience is offered daily during the listed operating period, from 9:30 a.m. to 5:30 p.m. Confirmation arrives within 48 hours, subject to availability. A maximum of eight people keeps the vehicle and underground walks manageable, and private tours can be arranged for different dates and times.

Starting in central Rijeka and following the old roads

The meeting point is on Ulica Rade Šupića in Rijeka. From there, the tour uses transport to reach a series of places outside the usual city walk.

The route includes the Louisiana and Petroleum roads. Those names hint at Rijeka’s long connection with movement, trade, industry, and military planning, though the value here is not just the roads themselves. They help place the fortifications within the wider setting around the city.

You stop at Banska vrata and Pašac bridge, two historically important points on the route. The guide uses these pauses to explain events in Croatia’s past and to connect the physical setting with the Battle of Rijeka. This is one of the tour’s strengths: you are not confined to a single underground site with no sense of what lies around it.

There are also broad views over the city. From higher ground, Rijeka’s position becomes easier to understand. The city, port, hills, river canyon, and defensive works are part of one story, not separate sightseeing stops.

The stops are likely brief, so do not expect a full guided visit at every location. Their purpose is to build a picture of the area before the longer walk underground. If you prefer a tour focused only on wartime interiors, the basic WW2 and Underground option may suit you better.

Walking through Katarina B, the 1,000-meter fortress

The central experience is the walk through Katarina B, an underground fortress extending for about 1,000 meters. Helmets and headlamps are provided, and the route is described as an easy hiking trail.

Easy does not mean polished. You are entering a military structure, not a modern museum. Expect darkness, cool air, and the rough character of an old defensive site. You may see alcoves where soldiers waited, systems connected with electricity and water, and details showing how the fortress was arranged for life underground.

That practical side is especially interesting. The fort was not simply a place to hide. Its rooms and passages were planned around survival, movement, protection, and defense. The guide’s explanation helps you see why the spaces are shaped and positioned as they are.

The supplied headlamps make the route possible, but you should still wear shoes with good grip. The operator specifically asks you to bring suitable footwear and warmer clothing. At 14°C, the underground may feel refreshing on a hot summer day, but it will feel cold if you arrive in shorts and a thin shirt.

The tour is not recommended for people with claustrophobia or epileptic seizures. That is worth taking seriously. Even with lamps and a guide, you will spend a substantial part of the visit in enclosed, dimly lit spaces.

Understanding the Battle of Rijeka

The historical focus is the Battle of Rijeka, part of the city’s liberation during World War II. The tour presents the fortresses as places tied to real military action, not just abandoned structures.

That distinction matters. Concrete walls can be visually striking, but they become much more meaningful when you understand who used them, what they were defending, and how the battle affected the city. A good guide turns a series of tunnels into a story with decisions, danger, and consequences.

Josip is praised for his relaxed and friendly delivery, as well as his strong grasp of local history. Sara is also singled out for her enthusiasm, clear explanations, smooth driving, and translation help. The experience can therefore vary slightly depending on the guide, but the strongest accounts point to guides who treat the subject with warmth rather than dry lecture-room formality.

One useful caution: the subject covers a complicated period, and not every question may receive a complete answer. If you have a specialist interest in military history, prepare a few focused questions, but think of this primarily as an accessible introduction to Rijeka’s wartime sites.

Above-ground forts and the Rječina river canyon

The extended version earns its name by adding more than Katarina B. Along the easy trail, you visit above-ground parts of several other fortresses and see the Rječina river canyon.

These extra stops make the tour feel less like a single-site attraction. You get to compare the hidden underground rooms with the exposed remains above ground. You also see how defensive positions relate to the hills and routes around Rijeka.

The canyon views provide a useful change of pace after the enclosed passages. They also show a quieter side of the area, with views toward old mills along the Rječina. If you are interested in industrial heritage, this section may whet your appetite for the separate Cycling Around tour, which focuses more closely on the river and its mills.

The views are one of the most praised parts of the experience. Still, this is not a sightseeing tour built around long photo stops. The scenery supports the military story rather than replacing it. Bring your camera, but listen for the explanations before rushing to the next viewpoint.

San Giovanni and the final film

The tour finishes in the entrance hall of the unfinished underground fortress San Giovanni. This is a fitting setting for the final part of the experience, since the building itself shows how large and ambitious these military works were.

Here you watch a short film about Rijeka after World War II, including the city’s restoration. The focus shifts from battles and fortifications to what happened when the fighting ended. That wider view helps prevent the tour from becoming only a collection of military facts.

Audiovisual effects and projection are included, adding a more theatrical element to the final presentation. Some people will appreciate the extra atmosphere. If you prefer a strictly traditional history talk, this portion may feel less essential, but it gives the morning a clear ending.

You also receive a glass of wine. It is a modest touch, yet it works well after a cool walk through tunnels and a series of historical explanations. The tasting is social rather than a full wine program, so do not book this expecting a vineyard visit or detailed regional tasting.

What the small group changes

With no more than eight participants, the guide can usually keep the group together in the tunnels and answer questions without shouting. That matters underground, where echoes and narrow passages can make a large group tiring.

A small group also makes the transport between stops more practical. The experience includes transport from the starting point, so you do not need to work out how to reach each fortress on your own.

Private tours and other dates or times are available on request. This is useful for families, couples, or groups with a particular schedule, though availability still needs to be confirmed. The public departure times listed are daily between 9:30 a.m. and 5:30 p.m.

Because the tour takes place outdoors as well as underground, weather matters. If poor weather causes cancellation, you are offered another date or a full refund. For a normal cancellation, you need to cancel at least 24 hours before the start time to receive a full refund.

Who should book this experience?

I would choose this tour if you want history with some movement and variety. It suits people who enjoy fortifications, wartime stories, unusual buildings, local geography, and short walks rather than a standard city bus tour.

It is also a good fit if you have already seen Rijeka’s main streets and want to understand the area beyond the center. The combination of roads, bridges, canyon views, fortresses, and film gives you a broader sense of the city.

Families with adults and older young adults may enjoy it, especially if everyone is comfortable in dark spaces. The route is described as easy, and most people can participate, but the underground setting remains the key test.

You may want the basic tour instead if three hours feels too long or if you want fewer stops. The extended version is for anyone who wants the fuller story and the second underground site at San Giovanni.

Practical advice for a better morning

Wear warm layers even in summer. The underground temperature is about 14°C, and you will be more comfortable with a light jacket or fleece.

Choose practical footwear. The route is an easy hike, but a fortress is not the place for smooth soles or delicate shoes. Helmets and headlamps are supplied, so you do not need to bring your own.

Arrive ready for both history and walking. The tour includes transport, but it is not a sit-down sightseeing ride. You will get out at several points, walk an underground route, and visit above-ground fortification remains.

If you are sensitive to flashing or projected effects, ask the operator for more details before booking. The tour includes audiovisual special effects and projection, and it is not recommended for people with epileptic seizures.

The starting point is in central Rijeka on Ulica Rade Šupića, and the activity returns there at the end. That makes it easy to continue exploring the city, provided you leave yourself enough time after the wine and film.

Should you book the WW2 and Underground Extended Tour?

Book it if you want Rijeka’s wartime story explained through real forts, tunnels, roads, and viewpoints rather than presented only in a museum. The 1,000-meter Katarina B walk is the main reason to go, while the canyon views, second underground fortress, film, and wine make the extended version feel like a complete half-day outing.

At $72.25, the price is fair for a small-group experience that includes transport, equipment, entrances, guides, insurance, and a tasting. I would skip it if enclosed spaces make you uneasy, if you dislike uneven walking, or if your interest in military history is limited.

For the right person, this is one of Rijeka’s more unusual history experiences. Bring a jacket, wear sensible shoes, and let the concrete, darkness, and views tell the story.

FAQ

How long does the WW2 and Underground Extended Tour last?

The tour lasts approximately three hours.

How much does the tour cost?

The listed price is $72.25 per person.

Where does the tour start and finish?

It starts on Ulica Rade Šupića in Rijeka and ends back at the same meeting point.

What is included in the tour?

The price includes helmets, headlamps, a guided tour, transport from the starting point, entrance to the underground fortresses, audiovisual effects and projection, insurance, and professional certified guides. Wine tasting is also included.

What should I wear?

Bring warmer clothes because the underground facilities are about 14°C. You should also wear suitable footwear for the easy hiking trail and fortress interiors.

How many people can join the tour?

The tour has a maximum of eight participants. Private tours and other dates or times are available on request.

Can I cancel the booking?

You can cancel for a full refund if you cancel at least 24 hours before the experience starts. Cancellations or changes made less than 24 hours before the start time are not refunded or accepted. If poor weather causes the operator to cancel, you will be offered another date or a full refund.