Old World Explorers
Next Expedition・Departs 19 October 2026・Serbia
Serbia: Star Forts & Underground Tunnels
Walk inside one of Europe’s greatest preserved fortresses, descend into kilometres of underground military galleries, and investigate the hidden history of the Danube frontier alongside researchers.
Limited Spots Available / 7 days / Belgrade・Novi Sad・Petrovaradin
Built from an international research community of over 50K members
€1200
Oct 2026
Limited
per person
7 days
Spaces
Led by researchers, not tour guides. Sixteen travelers, Belgrade and Novi Sad, October 19-25. First access to future expeditions. Sent via Tartaria Britannica.
Why This Expedition Exists
The story you weren't told.
- Vinča
- Roman Empire
- Ottoman Frontier
- Habsburg Fortresses
- Hidden Tunnels
Not a Tour
What Makes This Expedition Different?
01
Original Military Maps
Decode historical plans on location, against the ground they were drawn for.
02
Hidden Locations
Access places most visitors never see, arranged through local permissions.
03
Behind the Documentary
Watch investigations being documented as they happen in the field.
04
Research Discussions
Open evening conversations with historians and researchers, no script.
Next Expedition
Serbia: Star Forts & Buried Tunnels
October 19-25, 2026 ･ Belgrade & Novi Sad ･ Limited to 16 Explorers
The Sites
01
Kalemegdan Fortress & Tesla Tour
02
Sremski Karlovci
03
Novi Sad
04
Petrovaradin Fortress
05
Petrovaradin Underground Tunnels
Trip Details
Total Price
€1200
Group size
Max 16 explorers
Included
Accommodation · transportation between sites · expert guided tours · breakfast, lunch, & dinner
Welcome Kit on Arrival
Itinerary+ guide · SIM card · exclusive 50 page tour booklet · headlamp · and more
Reserve Your Spot
Remaining €800 balance due on arrival.
For More Information: info@oldworldexplorers.com
Who You'll Be Investigating With
Meet Your Research Team
Larry
Producing videos on “Heisting History” across multiple platforms.
Lead Investigator
Researcher and on-the-ground explorer at numerous ancient sites.
Mig
Old-world researcher since 2004 (250,000+ words published) specializing in the medieval period, forgotten technologies, and Tartarian antiquity.
Investigator & Tour Coordinator
Investigates alongside you on every tour, securing the permissions and access routes no other tour can reach.
In Collaboration with
Angie Dragoness
Independent historical researcher, author, documentary creator, and translator of rare manuscripts. Researching forgotten history since 2008.
Petrovaradin Fortress Investigator
Together with Larry & Mig leads the expedition through the forgotten history of Novi Sad, Sremski Karlovci, and Petrovaradin Fortress.
Questions
FAQ
How physically demanding is the trip?
Fitness Level: Low to Moderate — built for the curious, not the extreme.
This is a city and star-fort expedition, which means real walking is part of the experience — several hours a day, sometimes off the main path, with uneven terrain in the tunnels and the occasional flight of stairs. A sturdy pair of shoes and average mobility are essential. No technical climbing or caving gear required — just a willingness to go where the guidebooks stop.
For those with a braver resolve, an optional tunnel excursion awaits — not for the claustrophobic, but for the adventurer it will absolutely deliver. We move at a pace that works for the whole team, but come prepared for a proper old-world walk.
Special requirements? Get in touch beforehand at info@oldworldexplorers.com and we’ll help you plan around them.
What exactly is included in the €1200?
This trip is all-inclusive, with a few intentional exceptions.
Included: Airport transfers, all transportation between sites, all guided tours and site passes, continental breakfast buffet daily, a light lunch each day, and evening dinner sampling local cuisine. On arrival, you’ll receive an Expedition Bag with the essentials for the journey — local SIM card, guide materials, and a few mystery extras we won’t spoil here.
Not included: alcohol and personal spending money. Select excursions can be arranged locally once you’re on-site for those who want to go further.
Bring yourself and an open mind. We’ll take care of the rest.
How do I reserve my spot?
Secure your place: €400 deposit today. Remaining €800 paid in cash on arrival in Belgrade.
Pay your €400 deposit directly via the link on this page. The moment it clears, you’ll receive a confirmation email — your place on the expedition is locked in.
From there, your trip actually begins. You’ll be added to the private community group and sent the full itinerary, giving you weeks to get to know your guides and fellow travelers long before you ever board a plane. The remaining €800 is paid in cash on arrival — if you’d prefer a different method, just get in touch once your place is confirmed and we’ll work it out.
Only 16 spaces available. Once they’re gone, the next chance is the next expedition.
Is this trip open to first-timers with no background in this subject?
Our tours are for anyone with questions — especially those just beginning their journey. “Waking up” can be a lonely experience. We exist to change that, bringing together like-minded people at every knowledge level, from the newly curious to the deeply read.
And it goes both ways — we learn as much from our guests as they learn from us. Our expeditions cover everything you need to know to get started, and leave the door wide open for you to investigate what we don’t.
What's the group size and who else is going?
We cap every expedition at 16 explorers — because the experience is the expedition.
Ask anyone who’s traveled with us and they’ll tell you the same thing: the sites are extraordinary, but it’s the people who make the trip. Sixteen means real conversations, not a crowd trailing a flag. It means your guides know your name by day two. It means the person next to you in the tunnel becomes the person you’re still messaging six months later.
We keep it small on purpose — small enough that everyone gets access, gets heard, and leaves with more than photos. Sixteen like-minded people in one place, all asking the same questions you are. That’s the part no one tells you about until they’ve already been.
Only 16 spots for Serbia, October 2026.
Reserve with a €400 deposit below. You’ll get access to our private tour mates community and a welcome kit when you arrive. The remaining €800 is due on arrival in Belgrade.
For More Information: info@oldworldexplorers.com
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