THE ADVENTURE COLLECTIVE® · Independent discovery and booking for outdoor travel
Turn the City of London into a live puzzle: a self-guided, mobile treasure hunt that leads you from St Paul's through Roman remains, historic markets and ruined church gardens. Solve 15 clues across 4.7 km in about 2–2.5 hours and uncover lesser-known corners of the Square Mile.
Turn the City of London into a live puzzle: a self-guided, mobile treasure hunt that leads you from St Paul's through Roman remains, historic markets and ruined church gardens. Solve 15 clues across 4.7 km in about 2–2.5 hours and uncover lesser-known corners of the Square Mile.
Morning light catches the dome of St Paul's as your group taps their phones and steps onto cobbles that have carried traders, clerics and bankers for two millennia. The Square Mile pushes you forward — narrow lanes funneling you past carved stone, Victorian ironwork and sudden green courtyards — while a string of riddles turns familiar streets into a gameboard.
Verified experiences and guided adventures in the surrounding area.
Operated by CityDays · London, Greater London
Morning light catches the dome of St Paul's as your group taps their phones and steps onto cobbles that have carried traders, clerics and bankers for two millennia. The Square Mile pushes you forward — narrow lanes funneling you past carved stone, Victorian ironwork and sudden green courtyards — while a string of riddles turns familiar streets into a gameboard.
This route threads the original Roman settlement of Londinium, where amphitheatre foundations lie beneath modern pavement, and moves through markets and merchant lanes shaped by medieval and Victorian trade. The River Fleet, long diverted beneath the city, still influences low-lying alleys and the gradient of the walk. Culture here is brisk: suits at lunch, old coaching inns that survived the Great Fire, and market traders who remember addresses by story rather than postcode.
Expect 4.7 km of walking, about 2–2.5 hours, and 15 mobile-delivered clues that unlock the next waypoint when solved. The experience is self-guided — hints and a “Lost” command help you back on track — and two optional pub stops let you rest and compare notes. Practicalities matter: a charged phone with data or SMS, comfortable shoes for uneven paving, and an awareness of weekday rush hours will keep the game fun.
Play in the morning to avoid peak commuter traffic or late afternoon for golden light on stonework. The trail rewards curiosity: look up at carved facades, peer through alleys, and read plaques; those details are the difference between a fast run through and a memorable city discovery.
easy.
2–2.5 hours.
Suitable for most fitness levels; you should be comfortable walking about 5 km on paved, sometimes uneven surfaces.
No — the experience is self-guided. Clues are sent to your phone and you progress by solving them; help is available via hint or a “Lost” command.
The trail covers approximately 4.7 km and typically takes 2–2.5 hours depending on pace and any pub stops.
Clues are offered in Classic, Relaxed, Spanish, Italian and French, and you can switch formats mid-game.
Yes — the route is listed as stroller accessible and suitable for all fitness levels, though some streets may be narrow or crowded.
The Square Mile traces back to Roman Londinium; later medieval and Victorian redevelopment left layered streets and markets that the trail navigates.
Stick to public paths and respect private courtyards; the City manages many heritage sites, so keep noise and litter to a minimum to protect fragile features.
CityDays operates guided outdoor trips and adventures with an emphasis on safety, stewardship, and memorable experiences.
Morning light catches the dome of St Paul's as your group taps their phones and steps onto cobbles that have carried traders, clerics and bankers for two millennia. The Square Mile pushes you forward — narrow lanes funneling you past carved stone, Victorian ironwork and sudden green courtyards — while a string of riddles turns familiar streets into a gameboard.
Morning light catches the dome of St Paul's as your group taps their phones and steps onto cobbles that have carried traders, clerics and bankers for two millennia. The Square Mile pushes you forward — narrow lanes funneling you past carved stone, Victorian ironwork and sudden green courtyards — while a string of riddles turns familiar streets into a gameboard.
This route threads the original Roman settlement of Londinium, where amphitheatre foundations lie beneath modern pavement, and moves through markets and merchant lanes shaped by medieval and Victorian trade. The River Fleet, long diverted beneath the city, still influences low-lying alleys and the gradient of the walk. Culture here is brisk: suits at lunch, old coaching inns that survived the Great Fire, and market traders who remember addresses by story rather than postcode.
Expect 4.7 km of walking, about 2–2.5 hours, and 15 mobile-delivered clues that unlock the next waypoint when solved. The experience is self-guided — hints and a “Lost” command help you back on track — and two optional pub stops let you rest and compare notes. Practicalities matter: a charged phone with data or SMS, comfortable shoes for uneven paving, and an awareness of weekday rush hours will keep the game fun.
Play in the morning to avoid peak commuter traffic or late afternoon for golden light on stonework. The trail rewards curiosity: look up at carved facades, peer through alleys, and read plaques; those details are the difference between a fast run through and a memorable city discovery.