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
      2106
    • Very Good
      150
    • Average
      26
    • Poor
      9
    • Terrible
      9

    Recent Reviews:

    • Donna R
      Bury, United Kingdom
      Great afternoon solving the mystery
      5 of 5 stars
      Sunday, 6th July 2025
      Had a great afternoon in Manchester using our guide from a Christmas present. Was easy to follow and learnt things and saw places I didn’t know even with living in Manchester my whole life. Was good... Read full review
    • Louchu
      The absolute best time, loads of fun, lots of laughs - highly recommend! Next stop - Chester!
      5 of 5 stars
      Monday, 7th July 2025
      Fantastic! Had the best time 👌🏼 We did a guys v girls Great Coin Heist - lots of laughs & saw parts of London we didn’t know existed. Definitely recommend! ⭐️⭐️⭐️⭐️⭐️ Read full review
    • Alfie55
      Flimwell, United Kingdom
      Trip Type:
      Couples
      London Fleet Street Mystery Adventure
      5 of 5 stars
      Wednesday, 9th July 2025
      My wife and I did this Mystery Adventure on a Tuesday. We had previously done the Canterbury one and really enjoyed it. The clues take you around the Fleet Street area to some lovely quiet spots... 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 - 2300 reviews2300 reviews

    Opening Times

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

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