Private Tour
GRAILTRAIL: Quest for the Holy Grail (Self-Guided Adventure Walk)
Overview
2 hours
Mobile ticket
**NEW - AUDIO NARRATION ON ENGLISH LANGUAGE VERSION**
Join our quest for the Holy Grail, following a trail of mystic symbols, cryptic sites and secret signs hidden in plain sight. This trail is built on historical fact — if it’s not true it should be! The story it tells takes you way past the point of mere coincidence. What you discover will astonish you.
Bring your scepticism to Paternoster Square and take a leap of faith. By the time you reach Covent Garden, you will be convinced!
This sacred quest is to be savoured, not raced. It would make an epic pub crawl too! The directions are easy to follow. The clues are visual and rooted in the cityscape. All you need is your phone — and an open mind.
Fully playable in 11 languages (English, French, German, Italian, Spanish, Portuguese, Russian, Japanese, Chinese, Korean, Arabic) — no guide required.
Starts: Paternoster Square
Ends: Covent Garden
Distance: 5 km
For adults & teens with an interest in history, symbols and storytelling
Additional Info
Wheelchair accessible
Infants and small children can ride in a pram or stroller
Service animals allowed
Public transportation options are available nearby
Transportation options are wheelchair accessible
All areas and surfaces are wheelchair accessible
Travelers should have at least a moderate level of physical fitness
Cancellation Policy
For a full refund, cancel at least 24 hours before the scheduled departure time.
What‘s Included
A unique combination of history, mystery and adventure.
Mobile data charges for using the Telegram Messenger app on your phone.
What To Expect
Important: You cannot access your gamecode via the Tripadvisor ‘ticket’ link. It will be manually generated and sent to you by message after booking. No time slot is required — play any day, any time during daylight hours. All you need is a smartphone with the Telegram Messenger app. This self-guided walking trail is a symbolic quest through London’s forgotten sacred geography. Inspired by medieval legends, Templar secrets, and half-buried histories, it follows the Grail’s journey from Glastonbury to its current location — through alleyways, chapels, relics and invisible lines. Along the way, you’ll uncover connections between early Christianity, Celtic saints, Knights Templar and mysterious alignments. The clues are visual and embedded in the world around you — patterns, names, symbols, and the spaces between them. The trail is 5km, step-free and ends in Covent Garden. The story is fiction. The places are real. There’s no need to believe. All you have to do is notice what’s staring you in the face. Fully playable in 11 languages (English, French, German, Italian, Spanish, Portuguese, Russian, Japanese, Chinese, Korean, Arabic) — no guide required.
Options
GRAILTRAIL: Quest for the Holy Grail (Self-Guided Adventure Walk)
Reviews
6 reviews
Total reviews and rating from Viator & Tripadvisor
Fun and fascinating!
clarebrignall,
Nov 20, 2025
- Review from Tripadvisor
5.00What a brilliant experience - I absolutely loved it! You follow the story, which leads you through the streets, squares and alleys of London and asks you to find certain clues to allow you to continue the story. It's like a treasure hunt and fun history lesson all rolled into one. The app was really user-friendly, the "tasks" were very doable and the distance walked felt about perfect. I liked that you could either read the story on your phone or listen to it through headphones as you walked and looked around you. I will definitely be doing the other trails in the series.
Great hunt showing some...
Emma M,
Oct 21, 2025
- Review from Viator
5.00Great hunt showing some of the oldest parts of London that as a local even if never spotted before! Questions are easy but was great for a family of 4 with 2 teens for a bit of fun. A lot of pubs on the way too if you don’t have kids with you 😁
Great tour - loved doing it at my own pace.
christinagQ3138JY,
May 24, 2025
- Review from Tripadvisor
5.00Absolutely loved the tour! It took me to places I didn’t know. It was great fun and informative. I enjoyed stopping off on the way and doing it did it at my own pace. I needed to check something with Alex; he immediately responded, going out of his way to assist. I am really looking forward to booking some of the other tours.
A great way to see old London with new eyes
I4144LQxaviere,
Jun 2, 2024
- Review from Tripadvisor
5.00What a wonderful way to discover a secret London, hidign in plain sight! Enjoyable and educational in equal measure, with pubs, cafes and restaurants strategically located at key points along this walk, I spent a delightful three hours peeling away layers of a modern city to reveal a a dramatic medieval mystery. The game uses your phone to send you clues and messages as you progress along the trail, with a liberal does of really fascinating info on the Templars, the Grail, and the role London played in one of the greatest puzzles in history. I certainly see Braintree in Essex differently now! Put on some comfy shoes and treat yourself to a walk about a lovely part of London!
Holy Grail Quest
chrisgL8003QN,
Apr 27, 2024
- Review from Tripadvisor
5.00I really enjoyed the game, learned a lot and see London in a new way, lots of gems I have missed in the past were revealed. Great fun, I am going to try the other games, I would highly recommend this one.
Fun, imaginative walking trail with clues, history and fascinating parts of London
achrobes14,
Apr 20, 2024
- Review from Tripadvisor
5.00A really imaginative mystery trail to find out where the Holy Grail might be hidden. The route takes you round some really interesting historic parts of London and you end up seeing places you might have walked past many times before and never noticed. You are also given bite-sized chunks of historical info which really helps bring the area to life, and it's amazing how the clues all seem to come together to point in a particular direction for the grail! Fantastic fun.
Related Experiences
Operated by SideWalks