The Mystery of Nelson's Stolen Diamonds

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About

Turn the streets of Portsmouth into a 'whodunnit' treasure hunt adventure!

Discover Portsmouth's amazing history and secret hidden gems
Combine your skills to crack the clues and unravel the epic tale
Experience a one-of-a-kind adventure to treasure with your friends
Includes five historic taverns en route

On Nelson's last day on dry land, he stored a valuable diamond necklace in an old Portsmouth tavern. But that night.. someone snatched it! Was it stolen for money? Or an act of revenge? Nobody knows. But the villain left a trail of clues, and this is where you come in...

The pages of your Mystery Guide™ take you on an exciting puzzle adventure through the heart of Portsmouth, as you follow the maps, unlock the clues, and unravel the epic tale. Plus, an exciting twist awaits…

Make it to the end and you'll be struck by an amazing 'wow' moment when the case is solved and the villain is revealed before your eyes! Simply grab your Mystery Guide™, head to the start, and set off at a time that suits you.

Don't let the villain get away... Your time to start is now!

This is a self-guided tour, the 44-page guided activity booklet can be collected from behind the bar at The Dolphin pub at any time between 12pm and 8pm when showing your payment receipt. Address: 41 High St, Portsmouth PO1 2LU.

Details:
Walking distance: 3km
Duration: 2-3 hours

Please note: bank holidays may affect opening hours.

Book Tickets

Guide Prices

Ticket TypeTicket Tariff
Mystery Guide£19.99 activity

Note: Prices are a guide only and may change on a daily basis.

TripAdvisor

TripAdvisor

TripAdvisor Traveller Rating:

4.9 of 5 stars
    • Excellent
      2074
    • Very Good
      149
    • Average
      26
    • Poor
      9
    • Terrible
      9

    Recent Reviews:

    • 74lisa65
      Learnt so much about my own cities history
      4 of 5 stars
      Thursday, 3rd July 2025
      Us four family members did the Leicester City mystery guides and had an absolutely fabulous day, we visited the mentioned pub for food and drinks (there is no longer any discount off food as stated... Read full review
    • Curious37713143492
      Glasgow undiscovered
      5 of 5 stars
      Thursday, 3rd July 2025
      Did the Glasgow adventure with my friend Wendy and absolutely loved it. Discovered places and buildings I have walked past on numerous occasions but not really looked at them. The clues that go with... Read full review
    • Road62119114355
      Abingdon, United Kingdom
      Another great experience with a Mystery Guide
      5 of 5 stars
      Thursday, 3rd July 2025
      Another great Mystery Guide! Updates for any missing clues emailed through, a great walk around the town, just enough thinking required for the clues and a great selection of facts. This is my sixth... Read full review

    Map & Directions

    Video

    • Discover Mystery Guides

    Portsmouth Treasure Hunt: The Mystery of Nelson's Stolen Diamonds

    Type:Walking Tour

    Starts at the Nelson Statue, Old Portsmouth, Hampshire, PO1 2ND

    TripAdvisor Traveller Rating

    TripAdvisor Traveller Rating - 2267 reviews2267 reviews

    Opening Times

    The Mystery of Nelson's Stolen Diamonds (1 Jan 2025 - 31 Dec 2025)

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