The Hidden Valley, a Mission to Protect the Local Porto Heritage in Porto
Porto, Portugal

The Hidden Valley, a Mission to Protect the Local Porto Heritage

Outty Ranking 63 4.6 · 9 traveler reviews2.5 hoursFrom $12

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September 2026

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Adults

Age 13 and over

2

Children

Age 12 and under

0

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From, per person$12
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Outty Ranking

63/100

Solid Choice. Our proprietary evaluation. How we score

Traveler rating

4.6/5

Based on 9 traveler reviews. Ratings and reviews provided by Viator and Tripadvisor.

Quick answer

Is The Hidden Valley, a Mission to Protect the Local Porto Heritage worth booking?

The Hidden Valley, a Mission to Protect the Local Porto Heritage is a 2.5-hour experience in Porto, Portugal, from $12 per person. It scores 63 out of 100 on the Outty Ranking, which we label “Solid Choice, based on a 4.6/5 rating across 9 reviews. Cancellation is free up to 24 hours before the start time. Same-day spots are currently showing.

Outty Ranking
63 / 100
Rating
4.6/5 (9)
Duration
2.5 hours
From
$12 per person

In this mission, the city of Porto, one of the best European destinations today, is the target of espionage. The spies of GLOOM, the world’s most dangerous and secretive international organization, intend to copy its cha

What you get

    About this experience

    In this mission, the city of Porto, one of the best European destinations today, is the target of espionage. The spies of GLOOM, the world’s most dangerous and secretive international organization, intend to copy its charms to other cities worldwide. A mission where players are challenged to protect the city as secretively as possible. “The secret of getting ahead is getting the mission started"

    What's included

    Included

    • All Fees and Taxes
    • Starting documents

    Where it starts and ends

    Meeting point

    Porto

    This mission starts at Ageas Porto Coliseum, located at Rua de Passos Manuel 137, 4000-385 Porto.

    Hotel pickup

    No pickup: everyone meets at the start point.

    Ends at

    This mission starts at Ageas Porto Coliseum, located at Rua de Passos Manuel 137, 4000-385 Porto.

    Before you book

    Cancellation
    For a full refund, cancel at least 24 hours before the scheduled departure time.
    Languages
    pt, en
    Ticket
    Mobile Only
    Runs on
    Every day
    Group size
    Up to 7 travelers per booking
    Operated by
    Foxtrail Portugal

    Know before you go

    • Public transportation options are available nearby
    • Travelers should have a high level of physical fitness
    • Not recommended for people with special needs

    Photos

    The Hidden Valley, a Mission to Protect the Local Porto Heritage in Porto, photo 2The Hidden Valley, a Mission to Protect the Local Porto Heritage in Porto, photo 3The Hidden Valley, a Mission to Protect the Local Porto Heritage in Porto, photo 4The Hidden Valley, a Mission to Protect the Local Porto Heritage in Porto, photo 5

    What travelers are saying

    Outty’s summary of the themes that recur across 9 traveler reviews. Written by us, not quoted from reviewers.

    Good for families

    3 mentions

    Reviewers traveling with kids report it landed well with their group.

    Traveler reviews

    9 verified traveler reviews for The Hidden Valley, a Mission to Protect the Local Porto Heritage. Ratings and reviews provided by Viator and Tripadvisor.

    5 star
    8
    4 star
    0
    3 star
    0
    2 star
    0
    1 star
    1
    Sort
    Alexey_M · January 2025

    The event didn't take...

    The event didn't take place, no one from Foxtrail met us and they didn't answer the phone. Waiting for a refund.

    via Viator

    2022rppinto · January 2023

    Perhaps the coolest outdoor activity in Porto at the moment.

    Great walk, clever riddles and funny tasks to solve. It is really a cool mix of escape room tasks with treasure hunting outdoors. Children loved it.

    Response from the operator: Hello! Thank you for the feedback. Foxtrail is really for everyone!

    via Tripadvisor

    Sara-Tiago · January 2023

    Team building 5 stars!

    A unique experience to know an interesting area of Porto. We loved the games and we managed to finish our mission! Optima choice for team building events.

    Response from the operator: Olá, Sara! Obrigada pelo ótimo feedback! Ficamos felizes por esse evento de team building ter passado pela Foxtrail. Esperamos que nos escolham novamente!

    via Tripadvisor (translated)

    Tom_M · January 2023

    We will definitely try this in another location

    I had a great time playing, looking for the clues and deciphering the riddles! We will definitely do it again

    Response from the operator: Hello, Tom! Thank you very much for the feedback! Always happy to have players like you.

    via Viator

    Rafael_F · December 2022

    Our second foxtrail, once again really happy with the choice!

    We really liked the game, the clues are fun and challenging, and the courses are quite interesting. I highly recommend!

    Response from the operator: Hello! Thank you for the feedback. I guess that everything about Porto is quite interesting, right? Hope to have you on another mission really soon!

    via Viator

    Good to know

    Duration
    2.5 hours
    Free cancellation
    Up to 24h before
    Minimum age to book
    All ages
    Availability
    Bookable today
    Runs on
    Every day
    Price range
    $12 to $19
    Hotel pickup
    No pickup, meet at start point
    Booked in 30 days
    3
    Verdict
    Solid Choice

    Why this scores 63

    The Outty Ranking is a weighted composite. Here is how this experience performed on each component.

    Traveler sentiment (30% weight)83
    Review evidence (18% weight)30
    Booking momentum (14% weight)21
    Value for money (12% weight)100
    Listing quality (10% weight)69
    Local standing (8% weight)41
    Booking flexibility (8% weight)100

    The Hidden Valley, a Mission to Protect the Local Porto Heritage: questions travelers ask

    Practical detail on this experience, plus the wider planning questions for Porto.

    How much does The Hidden Valley, a Mission to Protect the Local Porto Heritage cost?

    +

    Prices start at $12 per person. The final price depends on the date, the time slot and the number of travelers, and peak weekends in Porto usually price higher than midweek mornings. Live pricing and remaining availability are confirmed on the booking screen before you pay.

    How long does The Hidden Valley, a Mission to Protect the Local Porto Heritage take?

    +

    Plan for about 2.5 hours from start to finish, not counting travel to the meeting point. Most travelers leave another 30 minutes on either side so the rest of the day in Porto is not rushed.

    Is The Hidden Valley, a Mission to Protect the Local Porto Heritage worth it?

    +

    It holds an Outty Ranking of 63 out of 100, which we label "Solid Choice". That score blends traveler sentiment (4.6/5 across 9 reviews), the depth of that review evidence, recent booking momentum, value for money against comparable last minute in Porto, and how flexible the cancellation terms are.

    Can I cancel or reschedule The Hidden Valley, a Mission to Protect the Local Porto Heritage?

    +

    Yes. Cancel free up to 24 hours before the start time for a full refund. Inside that window the booking is non-refundable, and no-shows are not refunded.

    Is The Hidden Valley, a Mission to Protect the Local Porto Heritage suitable for kids and families?

    +

    Yes, all ages are welcome. Families should still weigh the 2.5-hour running time, and strollers are easier on the earlier, quieter departures.

    How far in advance should I book The Hidden Valley, a Mission to Protect the Local Porto Heritage?

    +

    Around 3 people booked this in the last 30 days, so popular slots go early. Two to three weeks ahead is comfortable in shoulder season, while summer weekends and holidays in Porto can sell out a month out. Same-day spots do open up when other travelers cancel, so it is worth checking if you are already in town.

    What should I bring or wear?

    +

    Bring photo ID, your booking confirmation on your phone, a refillable water bottle and comfortable shoes. Dress for the weather in Porto and add a light layer if any part of the 2.5-hour experience runs outdoors or after sunset.

    Where does The Hidden Valley, a Mission to Protect the Local Porto Heritage start and how do I get there?

    +

    The exact meeting point and directions are on your voucher once you book, and they sit in central Porto within reach of public transport. Arrive 15 minutes early: late arrivals are treated as no-shows by most operators.

    What are the best things to do in Porto?

    +

    On Outty we rank every Porto experience on the same 0 to 100 scale, and alongside this one the highest scorers right now include The Unvanquished Tour in Porto City Center, Porto's #1 Walking Tour, Small Group Geres National Park Full Day with picnic from Porto. The city page groups everything into most popular, highest reviewed, last minute and family-friendly so you can build a day around what actually delivers.

    When is the best time to visit Porto?

    +

    Booking patterns follow the same curve: prices and queues climb in peak weeks, while shoulder season gives you better availability on the top-ranked experiences and more room to change plans.

    How many days do you need in Porto?

    +

    Three full days covers the headline sights without sprinting. A workable rhythm is one anchor experience each morning, such as this one, an unhurried afternoon in a single neighborhood, then a food or nightlife booking in the evening. Five days lets you add a day trip outside the city.

    Do I book through Outty or through the operator?

    +

    Outty ranks and explains the experiences, then hands you to Viator to complete the booking with the operator directly. The price is the same as booking on Viator yourself, and Outty earns an affiliate commission on the referral, which is how the rankings stay free to read.

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