The Underground City: Why Korea Builds Giant Shopping Centers Below the Streets

(A foreigner’s guide to Korea’s massive underground shopping culture — from Gangnam Station to COEX and beyond)

When foreigners first arrive in Seoul, they expect skyscrapers, neon signs, K‑pop billboards, and futuristic streets.

What they don’t expect is this:

A giant shopping mall…

underground.

Not a small basement store.

Not a tiny passageway.

But a full shopping district with:

• fashion boutiques
• cafés
• beauty shops
• restaurants
• convenience stores
• pharmacies
• arcades
• even medical clinics

All located beneath the streets.

One of the most famous examples is Gangnam Underground Shopping Center, connected directly to Gangnam Station.

But Gangnam is just one piece of a much bigger system: Korea’s underground city culture.

Foreigners often say:

“Why is there a whole shopping mall under the ground?”

“How is this so big?”

“Why does the subway station look like a department store?”

“Do Koreans really shop underground?”

Yes.

And here’s why.

🌐 1. Korea Builds Underground Because Space Is Limited

Seoul is one of the densest cities in the world.

There’s simply not enough space above ground.

So Korea builds:

• malls underground
• walkways underground
• markets underground
• food courts underground
• entire shopping districts underground

This solves multiple problems:

• lack of land
• overcrowded streets
• weather protection
• efficient transportation
• easy access for commuters

Foreigners often say:

“It feels like a second city beneath the real city.”

That’s exactly what it is.

🚇 2. Underground Shopping Centers Are Connected to Subway Stations

Korea’s subway system is massive, clean, and extremely convenient.

Millions of people use it every day.

So Korea built shopping centers directly inside subway stations.

Examples include:

Foreigners often say:

“I went to take the subway and accidentally ended up shopping for an hour.”

That’s the Korean experience.

🛒 3. Underground Shopping Is Cheap, Trendy, and Fast

Korean underground malls are known for:

• affordable fashion
• trendy styles
• fast turnover
• small independent shops
• huge variety

You can find:

• clothes
• shoes
• accessories
• cosmetics
• phone cases
• snacks
• gifts
• stationery

All at lower prices than department stores.

Foreigners often say:

“It’s like a giant fast-fashion market underground.”

Exactly.

🌧️ 4. Underground Shopping Protects You From Weather

Korea has:

• hot summers
• cold winters
• heavy rain
• monsoon season

Underground malls solve this.

You can:

• shop
• eat
• walk
• commute
• meet friends

All without stepping outside.

Foreigners often say:

“I didn’t go outside for three hours and still walked a kilometer.”

That’s the beauty of underground shopping.

🧭 5. Underground Malls Are Designed Like Mazes (On Purpose)

Korean underground malls are intentionally complex.

Why?

• maximize space
• increase foot traffic
• connect multiple subway lines
• link buildings together
• create natural shopping flow

Gangnam Station’s underground mall is famous for:

• long corridors
• branching paths
• hidden shops
• multiple exits
• endless intersections

Foreigners often say:

“I got lost, but in a fun way.”

That’s part of the charm.

🧼 6. Underground Spaces in Korea Are Shockingly Clean

Unlike many countries where underground spaces feel dark or unsafe, Korea’s underground malls are:

• bright
• clean
• safe
• modern
• well-maintained

You’ll find:

• LED lighting
• polished floors
• clean bathrooms
• security cameras
• staff everywhere

Foreigners often say:

“This is cleaner than malls above ground in my country.”

Korea takes public cleanliness seriously.

🛡️ 7. Underground Shopping Is Extremely Safe

Korea’s underground malls are safe because:

People shop comfortably even late at night.

Foreigners often say:

“I feel safer underground in Korea than above ground in other countries.”

Safety is part of the experience.

🧑‍🤝‍🧑 8. Underground Malls Are Social Spaces

Koreans don’t just shop underground.

They:

• meet friends
• eat meals
• study
• take photos
• hang out
• date
• relax

Underground malls are social hubs.

Foreigners often say:

“It feels like a community space, not just a shopping area.”

Exactly.

🏙️ 9. Underground Shopping Connects Entire Districts

Gangnam’s underground mall connects:

• subway lines
• bus stops
• office buildings
• cafés
• restaurants
• shopping streets

You can walk from one part of Gangnam to another entirely underground.

Same with:

• Jamsil
• Express Bus Terminal
• COEX
• Myeongdong
• Seoul Station

Foreigners often say:

“It’s like a hidden transportation network.”

It is.

🌅 Final Thoughts

Korea builds massive underground shopping centers because:

• space is limited
• subway stations are central
• weather is extreme
• safety is high
• cleanliness is prioritized
• shopping is cultural
• efficiency is valued
• underground life is normal

For foreigners, discovering Korea’s underground malls feels like finding a secret city beneath the real one.

Gangnam Underground Shopping Center isn’t just a mall.

It’s a symbol of Korea’s innovation, efficiency, and unique urban culture.