About 5 million people ride the Mexico City subway every day—but most commuters don’t realize how much there is to do and see without ever having to go above ground. From piano stairs to a space tunnel, exploring the attractions hidden within the metro just might be the most fun you can have for 5 pesos (about $0.25 USD). These Mexico City metro stations settle the old question once and for all; it’s both the journey and the destination.

1. TALISMAN

Talisman station (line 4) has a mammoth logo for a reason: Mammoth fossils were unearthed during construction of the metro, and you can see the bones—which date back to the Pleistocene—on display there.

2. LA RAZA

Sharon Hahn Darlin, Flickr // CC BY 2.0

How do you make a long transfer fly by? Transform it into a walk-through space tunnel illuminated by a glow-in-the-dark night sky, the highlight of the science museum located within La Raza station (lines 3 and 5).

3. VIVEROS

Viveros (line 3), a station named for the nearby nursery, is in full flower: It was recently given a jungle makeover complete with imitation palms, jaguars, and snakes to raise awareness for the preservation of southern Mexico’s Lacandon Rainforest.

4. PINO SUAREZ

Complement your day trip to the pyramids at Teotihuacan with a stop at the Pino Suarez station (lines 1 and 2), where you can see a 650-year-old pyramid dedicated to Ehecatl, the Aztec god of wind. Tens of thousands of users go through the station daily, making the pyramid one of the most visited archeological sites in Mexico. (Though it's referred to as Mexico’s smallest archaeological zone, the National Institute of Anthropology and History doesn't consider it a "proper" archaeological zone "due to its size and the fact of being located in a Metro Transport System facility.")

5. HIDALGO

Hidalgo (lines 2 and 3) may be the most miraculous of all of Mexico City’s metro stations: In 1997, someone (possibly a street vendor) discovered a water stain in the shape of the Virgin of Guadalupe in one of its floor tiles. The apparition attracted so many pilgrims that metro authorities eventually had to remove the tile, which is now enshrined just outside one of the exits (follow the signs for Iglesia), near the intersection of Paseo de la Reforma and Zarco. And if you happen to visit this station on the morning of the 28th of any month, you’ll be swarmed with pious commuters carrying figurines of Saint Judas Thaddeus—patron saint of delinquents and lost causes—who is venerated at the nearby San Hipolito Church.

6. AND 7. BELLAS ARTES AND TEZOZOMOC

No time to visit the vast National Museum of Anthropology? You can still catch reproductions of Mesoamerican statues at the Bellas Artes (lines 2 and 8) and Tezozomoc (line 6) stops.

8. ZOCALO

Randal Sheppard, Flickr // CC BY-SA 2.0

Miniature maniacs shouldn’t miss the scale models of Mexico City’s main plaza at the Zocalo stop (line 2). They depict, in tiny form, the metamorphosis of the capital from the Aztec Templo Mayor to the present-day Metropolitan Cathedral. (And bonus points to anyone who can spot the cat who lives in this station.)

9. DIVISION DEL NORTE

The music-themed Division del Norte station’s (line 3) free karaoke corner draws a crowd gathered to watch fellow riders belt out boleros and ballads on their way to work. The unassuming abuelitas laden with bags from the market always have the most impressive pipes.

10. POLANCO

Victor.Aguirre-Lopez, Wikimedia Commons // CC BY-SA 3.0

Don’t take the escalators at Polanco station (line 7), because the stairs are a giant musical piano keyboard. Finally, here’s your chance to live out Tom Hanks’s piano dance scene from the movie Big.

11. GUERRERO

The Guerrero stop (lines B and 3) is a tribute to the legends of lucha libre, with costume displays and murals dedicated to 45 of Mexico’s finest masked fighters.

12. AND 13. ZOCALO AND PINO SUAREZ

The largest bookshop in Latin America can be found in the long passage between the Zocalo and Pino Suarez stations. The underground emporium known as Un Paseo Por Los Libros sells titles from textbooks to manga and also hosts free workshops, lectures, and movie screenings.

14., 15., AND 16. COPILCO, TACUBAYA, AND AUDITORIO

Thelmadatter, Wikimedia Commons // Public Domain

Any visitor to Mexico City should check out Diego Rivera’s murals—but on your way, don’t forget to look up at the murals that decorate many metro stations. Particularly impressive are Guillermo Ceniceros’s ambitious chronicles of art through the history of time on the walls at the Copilco (line 3) and Tacubaya stations (lines 1, 7, and 9). On the kitschier side, see how many famous faces you can pick out in Jorge Flores Manjarrez’s I Spy-style mural of pop stars at the Auditorio stop (line 7).

17. ZAPATA

A museum of caricatures located inside the Zapata stop (line 12) is an homage to Mexican cartooning, including plenty of satirical interpretations of the mustachioed revolutionary who gives the station its name.

18. CHABACANO

If Chabacano station (lines 2, 8, and 9) feels unsettlingly familiar, it might be because it was used as a shooting location for the subway chase scene in the Arnold Schwarzenegger film Total Recall. Legend has it you can still spot splashes of fake blood on the ceiling.

19. MIXCOAC

ProtoplasmaKid, Wikimedia Commons // CC BY-SA 4.0

Has this metro adventure turned you into a super fan? Do a deep dive at Mixcoac station’s (line 12) sleek Metro Museum, where you can learn even more fun facts about the subway’s 50 years of history while you wait out rush hour.