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Crack the Code, Save the Marina
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Crack the code and stop Hull being covered in a grimy fog!
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Explore Hull Differently
Discover somewhere new - or rediscover somewhere you thought you knew.
- Follow a carefully planned self-guided route through the area
- Use real landmarks and features to crack around 18 clever clues
- Notice fascinating features you'd normally walk straight past
- Great fun for everyone from 6 to 106
- Around 2 hours of exploring
Around 2 miles of walking - One trail is perfect for up to 5 people
How it Works
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1. Choose how you want to explore
Use the App, print your Trail at home, or let us print and post it to you.
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2. Access it
instantlyYour App and PDF are ready immediately, whichever option you choose.
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3. Explore
& solveFollow the route and crack the sneaky clues along the way.
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4. Submit
your answerEnter your final
answer online to
reveal the ending.
Top secret!
We've got a mission for you in
Hull
Something strange is happening in the marina of Hull. Boats are starting to disappear without a trace, and the evil villain, Baron Ivor Grudge, is behind it all. Having been fired from his job as an apprentice welder in the dockyards of Hull, he is seeking revenge by making the marina disappear. It's up to YOU, our best code crackers, to follow the clues and deactivate the device before it's too late!
Spy Mission Through Hull's Old Town
Embark on an exciting self-guided spy mission through the Old Town of Hull, searching for clues to deactivate the device and save the marina. Starting in Queen Victoria Square, you'll explore the historic streets and landmarks of the old town, including the marina area. Keep an eye out for the unique cream telephone boxes, found only in Hull.
Will you be able to crack the code and save the marina from disappearing forever?
Calling all code crackers… The fate of the marina is in YOUR hands!
Everything you've uncovered has led to this...
Use the intelligence you've gathered, crack the final challenge and bring the mission to a successful close.
Trail Information
Trail Information
Trail Location
The Hull Old Town Treasure Trail starts at:
Paragon Street
Hull
Kingston upon Hull
East Yorkshire
HU1 3ND
England
Spy
Mission
Hours
miles
Not
Accessible
Not
Accessible
Dog
Friendly
Trail Details:
- A self-guided spy mission walking Trail around Hull.
- Ideal for kids aged 6 - 106!
- 2-mile loop Trail (takes 2 hours to complete at your own pace).
- Text message service with clues if you get stuck.
- Learn more about where you live or explore somewhere new.
- Download your Trail now for INSTANT FUN (or receive your copy in the post)!
More Information:
Navigating The Route
This is a circular spy mission through Hull’s Old Town, marina and city centre, with agents following pavements, pedestrian streets, bridges and waterside paths as they track down vital intel.
There are steps, bridges, varied terrain and marina edges along the route, so it is not suitable for wheelchairs or pushchairs. Take extra care near the water, especially along the marina and lock areas, and stay alert when crossing roads and moving through busy streets.
Getting There
Time to deploy your agents and begin the operation:
William Wilberforce statue, Wilberforce Drive (HU1 3DG) - Your official mission start point, outside the Hull School of Art and Design.
Lowgate Car Park (HU1 2AA) - A handy nearby option, with additional metered parking available in surrounding streets.
Need the Loo?
Even elite agents need a quick comfort break! Toilets can be found at the finish near Queen Victoria Square, and at Princes Quay Shopping Centre (after Clue 18).
There are also plenty of cafés and shops along the route - ideal for a discreet refuel while keeping your cover intact.
Bring Your Furry Sidekicks
Four-legged agents are welcome on this mission. With plenty of town streets and waterside paths to explore, it’s a great outing for canine companions - just keep leads handy near roads, bridges and the marina edge.
Marina Zones & Enemy Activity
Large sections of this mission take place around the marina, where visibility (and footing!) can be tricky. Watch for steps, edges and busy areas - and keep an eye out for suspicious “henchmen” activity along the waterfront.
Safe Zones & Refuelling
There are plenty of places to pause and regroup:
Along the route through Old Town (cafés and shops)
Near the finish at Queen Victoria Square
Queen’s Gardens (great picnic spot after your mission)
All perfect for reviewing intel before the final push.
Want to Make a Day of It?
Old Town Secrets & Spy Routes
This mission weaves through Hull’s historic Old Town, packed with narrow lanes, hidden corners and perfect cover for undercover agents.
Marina Mayhem & Waterside Intel
With long stretches along the marina, you’ll be right in the heart of the action. Bridges, locks and dockside paths make this feel like a proper high-stakes operation.
Museums, Gardens & Mission Extras
From museums along High Street to the open space of Queen’s Gardens, there’s loads to explore once your mission is complete - ideal for a relaxed debrief (preferably without the yellow fog…).
Mini Secret Agent Club
Mini Secret Agent Club
We have three super duper themed Clubs for your child to enjoy as part of their Treasure Trail experience.
Perfect for 4-8 year olds, the concept behind the Clubs is that your child will get a bundle of goodies to excite
them about their forthcoming Trail experience, something to keep them entertained whilst travelling to and from
the Trail, and something to be given on completion of the Trail as a keepsake.
Show more »
What is a Treasure Trail?
What is a Treasure Trail?
