
The Zanjón de Granados: Tunnels and Mystery of Buenos Aires
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September 2026
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Who is going?
Adults
Age 13 and over
Children
Age 12 and under
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Free cancellation up to 24 hours before. Same price on Viator, Outty earns a commission.
Traveler rating
4.3/5
Based on 10 traveler reviews. Ratings and reviews provided by Viator and Tripadvisor.
Quick answer
Is The Zanjón de Granados: Tunnels and Mystery of Buenos Aires worth booking?
The Zanjón de Granados: Tunnels and Mystery of Buenos Aires is a 1-hour experience in Buenos Aires, Argentina, from $49 per person. It scores 48 out of 100 on the Outty Ranking, which we label “Worth a Look”, based on a 4.3/5 rating across 10 reviews. Cancellation is free up to 24 hours before the start time. Same-day spots are currently showing.
- Outty Ranking
- 48 / 100
- Rating
- 4.3/5 (10)
- Duration
- 1 hours
- From
- $49 per person
Tunnels and Mystery, an enchanting place where poetry, history, and architecture meet. The city's most important archaeological site. A mystery sealed for over a hundred years. Beneath a carefully restored early 19th-cen
What you get
- Admission to the Tunnels
- Guided Tour
About this experience
Tunnels and Mystery, an enchanting place where poetry, history, and architecture meet. The city's most important archaeological site. A mystery sealed for over a hundred years. Beneath a carefully restored early 19th-century mansion lies a labyrinth of tunnels with brick vaults. This unique tour invites you to descend to the foundations of Buenos Aires: among archaeological remains and silent ruins, discover the best-kept secrets of Buenos Aires's past.
What's included
Included
- Admission to the Tunnels
- Guided Tour
Not included
- Hotel pick-up and drop-off
- Food, beverages and other services not especified
What you'll see and do
El Zanjon De Granados
In 1980s, the current owner of the site made an inadvertent archaeological discovery while attempting to restore this Italian-style house, whose façade and patios date back to the first half of the 19th century. As a result of the excavations, the remains of tunnels that once channeled the Zanjón de Granados, cisterns, water tanks, utensils, containers, and remains of buildings from 1700, 1740, and 1830 were recovered beneath the mansion and adjacent buildings.
60 minutes here · Admission included
Where it starts and ends
Meeting point
Buenos Aires
Hotel pickup
No pickup: everyone meets at the start point.
Ends at
Returns to the starting point
Options you can book
Guide in Spanish
Guide in English
Before you book
- Cancellation
- For a full refund, cancel at least 24 hours before the scheduled departure time.
- Languages
- en, es
- Ticket
- Mobile Only
- Runs on
- Every day
- Group size
- Up to 10 travelers per booking
- Operated by
- Gray Line Argentina
Know before you go
- Public transportation options are available nearby
- Infants are required to sit on an adult’s lap
- Suitable for all physical fitness levels
Photos






Good to know
- Duration
- 1 hours
- Free cancellation
- Up to 24h before
- Minimum age to book
- All ages
- Availability
- Bookable today
- Runs on
- Every day
- Hotel pickup
- No pickup, meet at start point
- Booked in 30 days
- 4
- Verdict
- Worth a Look
Why this scores 48
The Outty Ranking is a weighted composite. Here is how this experience performed on each component.
The Zanjón de Granados: Tunnels and Mystery of Buenos Aires: questions travelers ask
Practical detail on this experience, plus the wider planning questions for Buenos Aires.
How much does The Zanjón de Granados: Tunnels and Mystery of Buenos Aires cost?
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Prices start at $49 per person. The final price depends on the date, the time slot and the number of travelers, and peak weekends in Buenos Aires usually price higher than midweek mornings. Live pricing and remaining availability are confirmed on the booking screen before you pay.
How long does The Zanjón de Granados: Tunnels and Mystery of Buenos Aires take?
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Plan for about 1 hour 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 Buenos Aires is not rushed.
Is The Zanjón de Granados: Tunnels and Mystery of Buenos Aires worth it?
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It holds an Outty Ranking of 48 out of 100, which we label "Worth a Look". That score blends traveler sentiment (4.3/5 across 10 reviews), the depth of that review evidence, recent booking momentum, value for money against comparable last minute in Buenos Aires, and how flexible the cancellation terms are.
Can I cancel or reschedule The Zanjón de Granados: Tunnels and Mystery of Buenos Aires?
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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 Zanjón de Granados: Tunnels and Mystery of Buenos Aires suitable for kids and families?
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Yes, all ages are welcome. Families should still weigh the 1-hour running time, and strollers are easier on the earlier, quieter departures.
How far in advance should I book The Zanjón de Granados: Tunnels and Mystery of Buenos Aires?
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Around 4 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 Buenos Aires 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?
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Bring photo ID, your booking confirmation on your phone, a refillable water bottle and comfortable shoes. Dress for the weather in Buenos Aires and add a light layer if any part of the 1-hour experience runs outdoors or after sunset.
Where does The Zanjón de Granados: Tunnels and Mystery of Buenos Aires start and how do I get there?
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The exact meeting point and directions are on your voucher once you book, and they sit in central Buenos Aires 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 Buenos Aires?
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On Outty we rank every Buenos Aires experience on the same 0 to 100 scale, and alongside this one the highest scorers right now include Argentine Cooking, Wine & Beef Tasting at Argentine Experience, Historical Sherpa Food Tour of San Telmo with Street Food, Drinks, Cooking Class with Empanadas Steak & Flan by Argentine Experience. 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 Buenos Aires?
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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 Buenos Aires?
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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?
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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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