Immersive Treasure Hunt Adventure – City of London’s Secrets

Start near St Paul’s Cathedral and follow a trail through the City of London, the Square Mile built around the Roman settlement. Instead of listening to a guide explain the streets, you solve 15 riddles sent to your phone, moving from one site to the next as each answer reveals the path.

I like the freedom of a private, self-led format, and I like that the route includes two optional pub stops where you can pause for food or a drink. The main catch is that the clues can be tough, construction may affect the route, and some groups take longer than the advertised two and a half hours.

Key points at a glance

• 15 clues across 4.7 km: Expect a walking route of roughly 2 to 2.5 hours, depending on how quickly you solve the riddles.
• Roman, Victorian, and medieval London: The trail links a Roman amphitheatre, a Victorian market, and atmospheric ruins.
• Two optional pub breaks: Stop for refreshments, or keep moving if you want to finish faster.
• No physical guide: Instructions arrive through Telegram or SMS, with hints and help available by message.
• Private for your group: The price is $41.11 for up to two people, with no strangers joining your team.
• A real puzzle challenge: This is not a simple stroll. You may need patience, teamwork, and a willingness to ask for hints.

A treasure hunt instead of a standard London walk

This City of London adventure turns sightseeing into a walking puzzle. You begin at St Paul’s, then head east through streets that can feel familiar at first but reward closer attention. The clues point you toward places many people pass without noticing.

The experience is run by CityDays, but you do not meet a guide at the start. Your team receives the trail on a mobile phone, then works out where to go and what to look for. At each stop, you send the correct answer back to receive the next clue.

That format changes the pace. You are not standing behind a guide waiting for a group to gather. You are looking at building details, signs, lanes, and ruins because the answer is somewhere in front of you. The history arrives as part of the puzzle rather than as a long spoken explanation.

I would choose this for two people who enjoy solving problems together. It can also work well for friends who want a shared afternoon activity. It is less suited to anyone who wants a relaxed, fully guided tour with every turn handled for them.

Starting at St Paul’s and entering the Square Mile

The meeting point is at St Paul’s, Cheapside, London EC2V 6AA. This puts you near one of London’s most recognizable landmarks, but the trail is not simply a cathedral visit. St Paul’s is your starting reference point before the route leads east into the older core of the city.

The Square Mile is the historic center of London, shaped by the Roman settlement that grew along the Thames. You will spend the route walking through streets where modern offices, old churches, markets, inns, and archaeological remains sit close together.

The distance is about 4.7 kilometers. That is manageable for most people, but the riddles add time. A group that solves each clue quickly may finish close to two hours, while a group that needs hints, pauses for drinks, or takes wrong turns can run past two and a half hours.

Wear shoes suitable for city walking. You should also dress for the weather and season, since the experience takes place outdoors and there is no guide to adjust the pace or provide shelter.

How the phone clues shape the route

You receive each clue on your mobile phone. Telegram is the recommended option, though standard text messages are also available. You need a phone with some data or text-message service, depending on the format you choose.

The basic process is simple:

• Read the clue.
• Walk to the location it suggests.
• Search for the answer on site.
• Send the answer back.
• Receive the next step.

Hints are available if you get stuck. If you are in the right place but cannot work out what to examine, you can send hint. If you lose your way, you can send Lost for a detailed route to the next clue.

That safety net matters. The challenge is meant to test your observation and teamwork, not strand you in the city. Still, I would not treat the hint system as a replacement for paying attention. The fun comes from spotting the detail yourself, and using help too quickly may flatten the experience.

Your progress is timed and ranked on a leaderboard. Competitive pairs can compare their result with friends, while everyone else can ignore the ranking and treat the clock as a loose bit of extra pressure.

The Roman amphitheatre and London’s oldest layer

One of the early highlights is a Roman amphitheatre. Its presence gives the route a strong sense of place: this is not just a modern business district with a few old facades left behind. London began here as a Roman settlement, and the trail uses that past as one of its main threads.

The amphitheatre also shows why this activity works better than a generic walk. You are not only told that Roman London existed. You are sent toward a physical remnant and asked to look closely enough to find the information needed for the next clue.

The exact challenge may take some thought. That is part of the appeal, but it can frustrate anyone expecting an easy sightseeing game. One pair found the hunt harder than expected and took more than two and a half hours to complete it. Plan your afternoon with some spare time instead of scheduling a tight dinner reservation right afterward.

The first pub stop and a cosy historic pause

Around the midpoint, the route reaches a cosy inn. The setting is designed as a break in the hunt, giving you a place to warm up, rest your feet, or buy a drink before continuing east.

Food and drinks are not included. Alcoholic drinks, soft drinks, and anything to eat are purchased separately. CityDays has no affiliation with the pubs, so think of them as optional stopping points rather than included tour facilities.

You can skip this break if you are focused on your time. I would use it if the weather is poor or your group needs to reset after a difficult clue. A short pause can make the second half more enjoyable, especially since the route is self-led and you control the timing.

The pub stop also adds a useful local rhythm. London sightseeing can become a sequence of landmarks and photographs. Pausing at an inn gives you a chance to experience the city as a place with working pubs and ordinary daily life, not only as an open-air history lesson.

Victorian market streets and close observation

After the first refreshment stop, the trail continues through a Victorian market. Markets add visual variety to a route that otherwise passes through narrow streets, stone buildings, and office areas.

This is a section where the clue format should encourage you to slow down. Look at the surroundings rather than marching directly to the next pin or instruction. The answer may depend on a sign, inscription, building feature, or piece of information presented along the way.

The market also makes the hunt feel less predictable. You move from Roman remains to a later period of London’s story, then continue through the modern city. The appeal is in seeing those layers within one compact walking route.

Construction is the main practical concern here and elsewhere. A planned closure can make a clue harder to reach or force a detour. The trail does not have a physical guide on hand to reroute you, although you can message Lost for directions. If you see barriers, do not squeeze through or assume the clue is inaccessible. Use the messaging help and allow extra time.

Descending into atmospheric ruins

Later, the trail takes you down into ruins described as magical and atmospheric. This is one of the more unusual changes of setting on the route. After walking through active city streets, you move into a quieter, older space below street level.

The ruins provide the kind of discovery this activity is built around. You may have walked nearby before without realizing what was below or behind the main street. The clue gives you a reason to enter, look around, and connect the place with the wider story of London.

Do not expect a formal archaeological presentation. The information comes through the puzzle and the messages you receive after completing each stage. If you want lengthy historical explanations, a conventional guided walk will suit you better. If you like learning a fact because you had to find the answer first, this approach is more satisfying.

Finishing at another pub near the meeting point

The route ends back at the starting point, with another top-quality pub near the finish. This gives you a natural place to stop once the final clue is complete.

Again, refreshments cost extra. You can order a drink or food and talk through the hardest clues, compare your solving strategy, or check your leaderboard result. Since the activity is private, the end feels like your own team’s finish rather than a guide dismissing a large group.

Returning to the meeting point also makes the logistics easier. You do not need to arrange transport from a distant final stop. The starting area is near public transportation, so it is practical to continue into another part of London afterward.

Is $41.11 good value for two people?

The listed price is $41.11 per group of up to two people, not per person. For a pair, that works out to about $20.56 each before any pub purchases.

That is a fair price if you want a structured way to spend an afternoon and enjoy puzzle-solving. You are paying for the trail design, the phone interaction, the route between several sights, and the flexibility of a private activity. You are not paying for admission to a major attraction, a personal guide, or included food and drinks.

The value improves if you would otherwise book a guided city walk and want something more active. It is less compelling if you mainly want expert commentary or if your group dislikes timed challenges. The two pub breaks can add to the cost, but they are optional, so you can keep the outing close to the booking price.

Because the activity is for up to two people, pairs get the clearest value. Larger groups would need to check how booking works for their party rather than assuming one purchase covers everyone.

Who will enjoy the challenge most?

I would recommend this for:

• Couples who like solving clues together.
• Friends seeking a playful alternative to a standard tour.
• Repeat visitors who have already seen the main London sights.
• History-minded people who enjoy finding facts through observation.
• Independent pairs who prefer setting their own pace.
• Walkers comfortable covering about 5 kilometers in city streets.

I would think twice if you want a calm, linear walk with no wrong turns. The hunt can be challenging, and the timed ranking adds pressure even if you do not care about the leaderboard. It may also be a poor fit for anyone who cannot comfortably walk the full route.

Most people can take part, and service animals are allowed. The activity is private, but it is not physically guided. That distinction is important: you have privacy and flexibility, but you also carry responsibility for reading the clues, watching the time, and dealing with route changes.

Practical advice before you set out

Use Telegram if possible, since it is the recommended messaging option. Make sure your phone is charged and has the needed data or SMS service before arriving.

Give yourself more than the advertised two to two and a half hours. The official route takes about 2 to 2.5 hours, but a difficult clue, a wrong turn, a pub pause, or street construction can add time.

I would also avoid booking this immediately before a fixed appointment. The route is timed, but your real finish depends on how quickly your pair solves the riddles. One clue may take seconds, while another may require a careful search and a second look at the surroundings.

Finally, agree on your group’s style before starting. If one person wants to race and the other wants to stop for every detail, the hunt can become less fun. Decide if you are chasing the leaderboard or simply enjoying the route.

Should you book City of London’s Secrets?

Book it if you want to see the Square Mile through a game rather than a lecture. The combination of Roman remains, a Victorian market, underground ruins, and two optional pub breaks gives the route a pleasing range, while the private format lets you move at your own pace.

Skip it if you need a guide beside you or prefer easy clues. Construction can interfere with the route, some puzzles are genuinely demanding, and the finish may take longer than planned.

For a pair that enjoys teamwork and does not mind asking for a hint, $41.11 is a sensible way to spend a few hours in central London. Bring a charged phone, comfortable shoes, and patience. The best part is not simply reaching the next landmark. It is noticing what you might otherwise walk past.

FAQ

Where does the treasure hunt start?

It starts near St Paul’s at St Paul’s, Cheapside, London EC2V 6AA, UK.

Where does the activity end?

The trail ends back at the meeting point near St Paul’s.

How long does the hunt take?

The average duration is about 2 to 2.5 hours, though difficult clues, wrong turns, pub breaks, or construction may make it take longer.

How far do you walk?

The trail covers approximately 4.7 kilometers, or about 5 kilometers.

How many clues are included?

The hunt includes 15 clues.

Do I need a mobile phone?

Yes. You need a mobile phone with some data or text messages available.

Can I use SMS instead of Telegram?

Yes. You can receive the clues through standard text messages, although Telegram is the recommended option.

Is a guide physically present?

No. This is a self-led activity, and CityDays does not physically guide you along the route. You can message Lost for directions or hint if you need help with an answer.

Are food and drinks included?

No. Food, drinks, and alcoholic beverages are available to purchase at the optional pub stops but are not included in the price.