Physical Address
304 North Cardinal St.
Dorchester Center, MA 02124
Physical Address
304 North Cardinal St.
Dorchester Center, MA 02124

Discover Barcelona's secrets through a fun, puzzle-led self-guided tour that combines sightseeing, history, and engaging puzzles perfect for families and groups.
Rating: 5.0/5 (36 reviews)
Price: $25.22 per person
Duration: Approximately 2 hours
Location: Barcelona, Spain
Provider: Mystery City Games
Taking a peek into guided tours is one thing, but this self-guided adventure called The Secret of Cerdà offers a playful, puzzle-solving way to explore Barcelona’s iconic Eixample district. For just over $25, you get a two-hour journey through some of the city’s lesser-known stories, all while walking 3km and solving riddles. It’s like an interactive treasure hunt, perfect for families, friends, or even locals who think they know their city but want a fresh perspective.
What makes this experience stand out? We really appreciate the blend of fun and learning—you’ll walk past fascinating buildings, uncover snippets of true historical stories, and enjoy the thrill of cracking clues. On the downside, some might find the “easy” difficulty level a bit too accessible, especially if you’re used to more complex escape-style puzzles. But overall, if you’re after an authentic, off-the-beaten-path discovery that combines sightseeing with a game, this is a winner.
Ideal for those who love a challenge, enjoy discovering hidden corners, or want a memorable activity that combines light exercise with cultural insights, this tour is perfect for groups of friends, families with kids, or curious travelers eager to see Barcelona differently.

Looking for more options in Barcelona? Here are some other experiences worth considering.
Unlike typical walking tours led by guides, The Secret of Cerdà provides all the tools you need in a backpack—treasure maps, riddles, and goodies—so you’re totally in charge of your journey. The concept is straightforward: follow the map, solve puzzles, and learn about Barcelona’s history along the way. It’s a fantastic way to see the city through a different lens, especially if you’ve already visited the main sights or want to avoid overly touristy routes.
One aspect that reviewers love is the ability to explore at your own pace. For example, a couple mentioned how they appreciated touring the city as a couple and loved cracking puzzles together. The game is well-designed, with puzzles that are neither too simple nor too tricky, making it accessible and enjoyable for various ages and experience levels.
The two-hour route takes you through Barcelona’s historic center, with a focus on the city’s expansion designed by Ildefons Cerdà in 1856. This expansion, known as the Eixample, is famous for its grid pattern and octagonal blocks—but the tour peels back the layers of its secrets.
As you wander, expect to see interesting buildings and monuments, many of which aren’t on the typical tourist path. For instance, one reviewer pointed out how they noticed details about buildings they had never paid attention to before, thanks to the clues and facts they uncovered along the way.
One of the most praised aspects of this tour is the quality of the puzzles. They are ingeniously crafted to make you look at your surroundings differently. Some reviews mention the puzzles’ balance of challenge and fun, which keeps the game engaging without causing frustration. A guide provides a brief introduction and historical context, making the experience both fun and educational.
Plus, the activity includes true stories from Barcelona’s past—some amusing, some surprising. For example, one reviewer appreciated how the game showcased the city’s history, allowing even locals to see familiar streets with new eyes.
Starting from Carrer del Bruc, 9, the activity ends back at the same point, making it easy to incorporate into other plans. Since it’s a mobile ticket, there’s no need for a guide or group leader once you start. The activity is suitable for most travelers, with most people being able to participate, and even service animals are allowed.
The cost of $25.22 per person might seem modest for an engaging two-hour experience, especially considering you get to learn about Barcelona’s architecture and history while having fun. Some reviews note the value as particularly good, citing the activity’s well-organized design and engaging puzzles.
If you like interactive activities that combine education with entertainment, you’ll find this tour rewarding. It’s especially popular among families, with many reviewers mentioning how the puzzles are “not too simple nor too complicated” for children from age 5 to pre-teens.
Couples and groups of friends also enjoy the flexibility and challenge, with several reviewers mentioning how it’s a refreshing way to explore the city beyond traditional sightseeing.

This activity really shines for those who want to see Barcelona in a more personal, playful way. It’s perfect if you’re traveling with kids or family, as it offers a chance for everyone to participate equally. The cost provides good value, considering the level of engagement and the educational insights you gain.
For solo travelers or history buffs, it offers a light but meaningful way to discover details about the city’s 19th-century expansion and architecture. It’s also ideal for those who enjoy puzzles and games, adding a layer of fun to your sightseeing.
If you’re after a relaxed, self-paced activity that’s both affordable and memorable, this treasure hunt of Barcelona’s secrets will delight you and your companions alike.
“I’m born and grown in Barcelona but Moved years ofi. This game was very representative of the history of the city and I also enjoyed playing and …”

Is this tour suitable for children?
Yes, many reviews mention that the puzzles are appropriate for children ages 5 and up. It’s a fun way for families to learn together while exploring the city.
How long does the activity take?
The game lasts approximately two hours, covering about 3km of walking through Barcelona’s historic center.
What languages is the tour available in?
The activity can be enjoyed in English, Spanish, Catalan, and French, making it accessible for international visitors.
Do I need a guide or group to participate?
No, this is a self-guided experience. You receive a mobile ticket, and once you start, you and your group are on your own. It’s designed to be flexible and independent.
Where does the tour start and end?
The meeting point is on Carrer del Bruc, 9, and the activity ends back at the same spot, making logistics simple.
Is there any extra cost or hidden fees?
The price listed includes the entire experience. Some reviews mentioned that the “treasure” was just a pin, but generally, the value is considered fair given the engaging puzzles and historical content.
To sum it up, The Secret of Cerdà offers a lively, educational, and fun way to explore Barcelona’s version of history that’s often overlooked. It’s a perfect option for families, curious explorers, and puzzle lovers who want to see the city through a different lens. The combination of walking, storytelling, and problem-solving ensures an experience that’s memorable, authentic, and highly engaging—without the usual tour guide crowds or rigid schedules. Highly recommended for anyone eager to combine sightseeing with a little adventure.