There are over 190 metropolitan areas around the world today that run full-scale subway or rapid transit systems. You’ll mostly find these networks in crowded urban hubs across Asia, Europe, and North America, where they serve as the heartbeat of public transportation and help people move efficiently across town.
You can grab your copy of our “Which Cities Have Subways” map below in high resolution. We’ve put this resource together to show you exactly where underground rail networks are located across the globe. Whether you’re an urban planning geek, a student of geography, or just someone who loves trains, this map helps you see how rail infrastructure really shapes the way our modern cities function.
| Feature | Detail | The Takeaway |
|---|---|---|
| Top Regions | East Asia & Europe | These areas have the highest number of rail miles per person. |
| The Oldest | London Underground | Opened back in 1863—it was the world’s first. |
| Longest Network | Shanghai Metro | It’s still growing fast as of 2026. |
| Where they are | Major Urban Centers | Usually found only in very densely populated cities. |
How Geography Shapes Transit
Why Density Matters
If a city has an underground transit system, it’s almost always because there are simply too many people to move around on the surface. Geographically speaking, cities that pull this off often sit on flat coastal land or river deltas where they can’t easily sprawl outward. By going underground, these cities get around the limitations of surface-level traffic and crowded streets.
The Challenges of Building Underground
Building these tunnels is no small feat. Engineers have to deal with tough geological hurdles, like digging through soggy soil or hitting high water tables. They often have to use massive tunnel boring machines to get the job done. Climate is a big factor, too; in cities with brutal heat waves or freezing winters, having a subterranean train network is a lifesaver for commuters.
How You Can Use This Map
- Urban Planning Research: Use our map to look at where populations are growing and figure out which cities are struggling because they lack heavy rail infrastructure.
- School Projects: It’s a great tool for teachers to explain how industrialization in the 19th and 20th centuries set the stage for how our big cities look today.
- Travel Planning: Planning a big trip? Use the map to find transit-friendly areas so you can book a hotel within walking distance of the main train hubs.
Printing Tips and Tricks
To make sure you get the best print, follow these guidelines. For poster-sized prints, use our vector file—it won’t get blurry or pixelated no matter how big you print it. If you’re printing at home, make sure your settings are set to “Fit to Page” so you don’t lose any of the legend or symbols.
- Landscape Mode: The map is designed in landscape orientation to fit all those sprawling global transit lines.
- Grayscale Printing: We designed the lines with high contrast, so it’ll still look crisp even if you print it in black and white.
Pro Tip from the Cartographer
When you’re looking at the map, notice the difference between the hub-and-spoke style and the grid style. You’ll see that older European cities tend to have lines that radiate out from the center, while newer Asian systems look more like a neat grid. If you want it to look extra sharp, put the finished print in a frame with a white mat border—it really makes the transit lines pop.
Test Your Knowledge: Quick Map Quiz
1. Which city is home to the world’s oldest underground rail system?
- A) Paris
- B) New York
- C) London
- D) Tokyo
2. What is the main reason a city decides to build an underground transit system?
- A) Because they are near mountains
- B) Because they have very high population density
- C) Because they get a lot of rain
- D) Because they are near a national border
3. Why do we suggest using a vector format for printing?
- A) It downloads faster
- B) It uses less ink
- C) You can scale it up as much as you want without it getting blurry
- D) It only works on grayscale printers
Answer Key: 1-C, 2-B, 3-C
FAQ
Which cities are actually on this map?
The map covers all the major global cities that run a true heavy rail or rapid transit system. We’ve left out light rail and tram-only networks to keep the focus on the big-scale stuff.
Can I use this for work projects?
The map is totally free for students and personal use. If you’re looking to use it for a commercial project, just reach out to our licensing department first.
Is the map updated for 2026?
Yes, we refresh the data every year to make sure we include all the latest transit projects opening up around the world.
What’s the best way to print this for a classroom?
Your best bet is to take the vector file to a local print shop and ask for matte paper. It cuts down on glare, so students can actually see the map details clearly from the back of the room.
*Information verified and last updated: June 2026*
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