20 Things You Didn’t Know About CDMX

Mexico City, or CDMX as locals call it, is a place full of surprises. Most travelers know about its famous landmarks like the Zócalo or Chapultepec Park, but there’s so much more beneath the surface. I’ve spent time exploring this vast city and uncovered 20 things you didn’t know about CDMX that will make your visit richer and more memorable.

1. CDMX Sits on a Lakebed

Unlike many cities built on solid ground, Mexico City was founded on the ancient lakebed of Lake Texcoco. This causes the city to sink about 10 centimeters every year in some areas. That’s why some buildings lean or crack over time. It also explains the frequent flooding during the rainy season.

2. The City Has Its Own Volcano

Just outside CDMX lies the Popocatépetl volcano, one of Mexico’s most active volcanoes. It’s visible from many parts of the city on clear days. Locals often watch its smoke plumes, which can signal increased volcanic activity.

3. The Metro Is One of the Largest in the World

CDMX’s metro system carries over 4.5 million passengers daily. It’s the second largest metro system in North America after New York City. What’s unique is that each station has its own icon, making it easier for people who don’t read Spanish to navigate.

4. You Can Visit a Floating Garden

Xochimilco, in the southern part of the city, is famous for its canals and colorful trajineras (boats). These canals are remnants of the ancient lake system. You can enjoy a boat ride while listening to mariachi bands and tasting local food.

5. The City Has a Hidden Beach

Yes, you read that right. Inside the city, there’s a man-made beach called Playa del Bosque in Chapultepec Park. It’s a small sandy area with water features where families relax during hot days.

6. CDMX Has the World’s Largest Pyramid by Volume

The Great Pyramid of Cholula, located just outside the city, is the largest pyramid in the world by volume, even bigger than the Great Pyramid of Giza. It’s mostly hidden under a hill with a church built on top.

7. The City Hosts the Largest Book Fair in Latin America

The Feria Internacional del Libro del Palacio de Minería attracts thousands of visitors every year. It’s a paradise for book lovers, featuring hundreds of publishers and authors from around the world.

8. You Can Explore an Ancient Aztec Market

The Mercado de Sonora is a traditional market where you can find everything from herbs and potions to traditional foods and crafts. It’s a glimpse into the city’s indigenous roots and daily life.

9. CDMX Has a Street Dedicated to Murals

Callejón de los Sapos is a narrow alley filled with colorful murals that tell stories of Mexican history and culture. It’s a perfect spot for photography and discovering local art.

10. The City Has a Secret Tunnel Network

Beneath the historic center, there are tunnels that were used during the colonial era for water drainage and secret passages. Some are open for tours, revealing a hidden side of the city’s past.

11. The City Has a Giant Urban Garden

Parque Bicentenario is a modern green space built on a former oil refinery site. It features gardens, lakes, and playgrounds, offering a peaceful escape from the urban rush.

12. You Can Visit a Museum Dedicated to Torture Devices

The Museo de la Tortura showcases instruments used throughout history. It’s a chilling but fascinating look at human history and justice systems.

13. CDMX Has the Oldest University in the Americas

The National Autonomous University of Mexico (UNAM) was founded in 1551. Its campus is a UNESCO World Heritage site, famous for its murals by Diego Rivera and others.

14. The City Has a Giant Sculpture of a Hand

The “Mano” sculpture by artist Sebastián is a massive hand rising from the ground in a public park. It’s a popular meeting point and photo spot.

15. You Can Taste Insects as Street Food

Chapulines (grasshoppers) are a traditional snack in CDMX. They are toasted with chili and lime and sold at markets and street stalls. It’s a crunchy, tangy treat that adventurous eaters should try.

16. The City Has a Neighborhood Full of Canals

Besides Xochimilco, there’s also the lesser-known neighborhood of Tláhuac with canals and chinampas (floating gardens). It’s quieter and less touristy but equally charming.

17. CDMX Has a Giant Urban Library

The Biblioteca Vasconcelos is a stunning modern library with vast collections and unique architecture. It’s sometimes called the “Megabiblioteca” and is a must-visit for book lovers.

18. The City Hosts a Massive Day of the Dead Parade

Inspired by the movie Coco, CDMX started an official Day of the Dead parade in 2016. It has grown into a huge event with floats, costumes, and thousands of participants.

19. You Can Visit a Museum Inside a Former Prison

The Museo de la Ciudad de México is housed in the old Lecumberri prison. It tells the story of the city through exhibits and art.

20. The City Has a Hidden Gem for Coffee Lovers

Café de Tacuba is a historic café opened in 1912. It serves traditional Mexican coffee and dishes in a beautiful colonial setting. It’s a perfect spot to rest after exploring.