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 a web browser.
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.
There is no guide to meet you — your guide is your phone. Your Viator booking reference (BR-…) is your ticket. Go to the start point for the trail, open play.sidewalks.co.uk on your phone, tap "Booked on Viator?" and enter your booking reference. Everyone in your group should do this.
There is no guide to meet you — your guide is your phone. Your Viator booking reference (BR-…) is your ticket. Go to the start point for the trail, open play.sidewalks.co.uk on your phone, tap "Booked on Viator?" and enter your booking reference. Everyone in your group should do this.
