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
      2120
    • Very Good
      150
    • Average
      26
    • Poor
      9
    • Terrible
      9

    Recent Reviews:

    • David W
      New ways to explore
      5 of 5 stars
      Saturday, 12th July 2025
      Having wanted to explore more of London i decided to have a little fun doing it and you guide provided just that. Not only did I experience parts I would never have thought to explore, it opened up... Read full review
    • Andrew C
      There was no fireworks on the day but it went with a bang
      5 of 5 stars
      Sunday, 13th July 2025
      What an amazing day in York. Doing the Guy Fawkes experience, and Exploring York and it's history. The clues were eventful, and we had so much fun we will definitely do another in another city well... Read full review
    • Tricia B
      London mystery tour
      5 of 5 stars
      Monday, 14th July 2025
      Brilliant idea, very entertaining and well planned. Saw little sights of London that we wouldn't have seen, and amazing experience ❤️ 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 - 2310 reviews2310 reviews

    Opening Times

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

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