🗺️ Seoul's Secret Underground is Finally OPEN! 335m of K-Pop, K-Fashion & Media Art Awaits in 2026!
Hidden for 40 YEARS beneath Seoul City Hall Plaza — a massive 335-meter underground space is being reborn as Korea's most jaw-dropping K-Content experience hub, opening October 2026! 🎶✨ Connected directly to Euljiro Subway Station, this is set to be THE new hotspot for every Korea traveler. Here's everything you need to know BEFORE the doors open!
※ Always verify the latest details on the official Seoul City website before visiting: seoul.go.kr
The Seoul Plaza Underground K-Content Space is one of Seoul City's boldest cultural projects in decades. A massive underground corridor — built in the early 1980s beneath Seoul City Hall Plaza — was left unused for over 40 years. Now, Seoul Metropolitan Government is transforming it into a state-of-the-art K-content experience platform in partnership with the private sector.
Based on official announcement materials, the space measures 9.5m wide × 335m long, totaling 3,261㎡ (approximately 1,000 pyeong / 35,100 sq ft). It will be directly connected to Euljiro 1-ga (Euljiro Ibgu) Station on Seoul Subway Line 2 and will feature immersive media art, K-fashion, and K-pop experiences.
The official opening is scheduled for October 2026. Ticket prices have not yet been announced — but this guide will walk you through exactly how to stay informed!
Check Opening Info
💡 Klook offers Seoul K-pop & media art experiences you can book right now — explore similar options while you wait for October!
The Seoul Plaza Underground K-Content Space opens in October 2026 — ticket prices and booking methods have not yet been officially announced.In the meantime, browse Seoul K-content experiences on Klook to get a feel for pricing and what to expect. For accommodation near City Hall and Euljiro, compare options on Agoda or Booking.com — October is peak autumn season in Seoul, so book early!
📊 Seoul Underground K-Content Space – At a Glance
40 Years Hidden — Now Seoul's Biggest Urban K-Culture Hub!
Abandoned since the 1980s, this massive underground space beneath Seoul Plaza is being reborn as an immersive K-content destination featuring media art, K-fashion, and K-pop experiences.
Opening: October 2026 (exact date TBA)
Location: Underground beneath Seoul City Hall Plaza, directly connected to Euljiro Ibgu Station (Seoul Subway Line 2)
Admission: TBA (official announcement pending)
Size: 9.5m wide × 335m long | 3,261㎡ (~35,100 sq ft)
⏰ Follow official channels now so you're first in line on opening day!
Key Info
Opening: October 2026
Direct subway access via Euljiro Ibgu Station (Line 2) — no transfers needed.
Media art · K-fashion · K-pop immersive experience zones planned.
Public-private partnership with Seoul Metropolitan Government.
3,261㎡ — Korea's largest urban underground cultural space.
⏰ Follow official channels now — don't miss the ticket drop!
🏙️
1. About the Space – 3 Key Facts
History & Scale
This extraordinary space sits between the upper structure of Seoul Subway Line 2 and the lower level of Korea's first-ever underground shopping arcade — built in the early 1980s and left completely unused ever since.
According to official Seoul City announcement documents, the tunnel-like space is 9.5m wide, 335m long, and covers 3,261㎡ (approximately 1,000 pyeong). It will be directly connected to Euljiro Ibgu Station on Line 2, meaning visitors can arrive by subway and enter without stepping outside — perfect for rainy days or hot summers!
Nothing quite like this has ever been opened in Seoul's city center before — making it a genuinely historic moment for Korea's urban cultural scene. 🎊
What K-Content Experiences Are Planned?
According to Seoul City's announcement, the space will feature an immersive urban K-content hub combining media art, K-fashion, and K-pop experiences, developed through a public-private collaboration model.
Planned zones reportedly include a large-scale media art installation, a K-pop artist experience zone, and a K-fashion showroom — positioning this as a global K-culture landmark in the heart of Seoul.
With a strong focus on international visitors, this is expected to become a must-visit attraction for every traveler to Seoul — right up there with Gyeongbokgung Palace and Myeongdong! 🇰🇷
Explore the Experiences
💡 Klook has Seoul K-pop & media art tours you can book today — start planning your K-content Seoul trip!
Can't wait until October? Seoul already has amazing K-content spots! Search "Seoul K-pop experience" or "Seoul media art" on Klook to find options at Hybe Insight, Coex K-pop Square, and more.When the underground space opens, tickets will likely be available via major platforms — bookmark Klook and Trazy now so you're ready on launch day! 🎟️
2. Location & How to Get There – 3 Ways
Direct Access from Euljiro Ibgu Station (Line 2)
The Seoul Underground K-Content Space will be directly accessible from Euljiro Ibgu Station (을지로입구역) on Seoul Subway Line 2. Expected entry points are near Exit 2 or Exit 5, and the space is also within a 5-minute walk of City Hall Station (시청역) on Lines 1 and 2.
Since it's underground, you can arrive via subway and enter immediately — no outdoor walking needed. Rain, snow, summer heat? No problem at all! ☀️🌧️
Bus connections from all across Seoul are also abundant given its central city location. A single Line 2 ride gets you here from Hongdae, Gangnam, Sinchon, and beyond.
Nearby Seoul Attractions
The space sits within walking distance of Seoul's biggest landmarks — Seoul City Hall, Deoksugung Palace, Cheonggyecheon Stream, and Gwanghwamun Square — all reachable within 10 minutes on foot.
A recommended half-day Seoul itinerary: Underground K-Content Space → Deoksugung Palace Stone Wall Road → Cheonggyecheon Streamside Walk → Gwanghwamun Square. 🗺️
From anywhere in Seoul, the journey to City Hall or Euljiro takes under 30 minutes by subway — this is truly Seoul's most accessible new attraction.
3. Tickets & How to Stay Informed – 4 Steps
Step 1: Follow Official Seoul City Channels
As of May 2026, no official ticket price has been announced. The fastest way to get updates is to follow Seoul Metropolitan Government's official website (seoul.go.kr) and their official social media accounts.
Seoul Media Hub (mediahub.seoul.go.kr) also publishes all official press releases — bookmark it now for the latest news on ticket pricing, booking dates, and program details.
Step 2: Browse Klook & Trazy Now
Tickets after opening will likely be sold via major global platforms. Start browsing Klook and Trazy now under "Seoul K-pop" or "Seoul underground experience" to compare similar attractions and get a sense of pricing.
Setting an alert on these platforms will help you snap up tickets the moment they go live — especially important if you're planning to visit on opening day! 🎫
Step 3: Book Accommodation Near Euljiro Early
If you're planning to visit in October 2026, start looking at hotels near Euljiro or City Hall Station now. Search "Euljiro hotel Seoul" or "Seoul City Hall hotel" on Agoda or Booking.com — rooms start from around ₩70,000/night.
October is Seoul's peak autumn foliage season — one of the busiest travel periods of the year. Early booking is strongly recommended! 🍂
Step 4: Plan Your Opening-Day Itinerary
Suggested first-day route: Euljiro Ibgu Station → Underground K-Content Space → Seoul City Hall Plaza → Deoksugung Palace → Cheonggyecheon → Gwanghwamun. A perfect half-day urban adventure! 🗺️
On opening days, expect long lines on weekends. Aim for a weekday morning visit (10:00 AM – 12:00 PM) for the most comfortable experience.
Get Ticket Info
💡 Agoda & Booking.com offer up to 30% off Euljiro & City Hall area hotels — lock in your rate today!
Pair your visit to the Seoul Underground K-Content Space with a full Seoul city center trip! Search "Euljiro hotel" or "Seoul City Hall hotel" on Agoda or Booking.com for the best deals.Trip.com also has hotel + attractions bundle packages for Seoul worth comparing — all in one booking. 🏨
4. Food & Stay Nearby – 3 Top Picks
Euljiro Hipster Food Alley
The Euljiro (을지로) neighborhood has exploded in popularity as Seoul's coolest "hipster" district — narrow retro alleyways packed with indie cafes, atmospheric bars, and trendy restaurants between Euljiro 3-ga and 4-ga stations.
Average dinner cost per person: ₩12,000–₩20,000. The vibes-to-price ratio is excellent. It's the perfect pre- or post-visit dining experience right on the doorstep of the underground space! 🍻
Business & Boutique Hotels near City Hall Station
From sleek business hotels to 4-star luxury options, City Hall Station has it all. Rates range from ₩70,000–₩180,000 per night. Popular choices include The Westin Josun Seoul and President Hotel for their prime location.
Compare prices on Agoda or Booking.com — October is high season in Seoul, so booking now is a smart move! 🏨
Cheonggyecheon Stream & Gwangjang Market
Just 10 minutes on foot from the underground space, Cheonggyecheon Stream (청계천) offers a beautiful waterside promenade through the heart of Seoul. Combine it with a visit to Gwangjang Market (광장시장) — one of Seoul's oldest traditional markets — for iconic Korean street food: Bindaetteok (mung bean pancakes) and Mayak Gimbap (addictive mini rice rolls) at just ₩4,000–₩5,000 a pop. 🍡
Gwangjang Market also operates in the evenings — perfect for a late-night bite after your K-content experience! 🌙
5. Seoul Underground vs. Existing K-Content Spaces
Seoul already has great K-content spots — so how does this new underground space compare? Check the table below to plan your Seoul K-content itinerary!
| Category | Seoul Plaza Underground | Hybe Insight / Hikers Ground (Myeongdong) |
|---|---|---|
| Location | City Hall · Euljiro Ibgu (Line 2 direct) | Myeongdong · Korea Tourism Organization |
| Size | 3,261㎡ · 335m long tunnel | 5-floor multi-use cultural complex |
| Main Content | Media art · K-fashion · K-pop experiences | K-pop · Hallyu media content |
| Admission | TBA (opens October 2026) | Free (some paid programs) |
| Status | Opening October 2026 | Already operating (since 2022) |
6. Insider Tips Before You Visit – 5 Things
Follow Official SNS & Set Alerts Now
Follow Seoul Metropolitan Government's official social media channels and turn on notifications. Ticket pricing, reservation opening dates, and any pre-opening preview events will be announced there first.
Set a keyword news alert for "Seoul Plaza underground K-content" on Google News or Naver News — you'll be notified the moment any new article is published! 🔔
Weather-Proof: Underground = Always Comfortable
One of the biggest perks of an underground venue is that it's completely weatherproof. Whether it's a Seoul summer heat wave (35°C+), a rainy autumn day, or a cold winter snap — the underground maintains a comfortable temperature year-round. 🌡️
Direct subway connection means zero outdoor walking from the station to the entrance — ideal for visitors with heavy luggage or those traveling with young children.
Look Out for Pre-Opening Preview Events
Seoul City typically organizes preview events for major public cultural projects. In fact, a preliminary underground exploration event was held in 2025 — so a similar pre-opening preview for the 2026 opening is possible. Keep your eye on official channels! 🎉
Preview participants often receive exclusive photo ops or early-bird perks unavailable after opening.
Combine With Deoksugung & Cheonggyecheon
Deoksugung Palace (덕수궁, entrance fee ₩1,000) is a 10-minute walk away, followed by the iconic Deoksugung Stone Wall Road — one of Seoul's most romantic strolls. Cheonggyecheon and Gwanghwamun are also within easy reach. A full half-day or full-day itinerary is very easy to build around this location. 🗺️
Visit on a Weekday Morning for Shorter Lines
Opening week crowds are expected to be massive on weekends. Aim for a weekday morning visit (10:00 AM – 12:00 PM) to enjoy a relaxed, queue-free experience.
If a reservation system is introduced, sign up the moment booking opens — just like popular K-experiences, spots will fill up fast! 🎟️
All Tips & Info
💡 Klook & Trazy are your go-to platforms for Seoul cultural event tickets — install both apps now!
While you wait for the October opening, explore Seoul's existing K-content scene on Klook or Trazy — from Hybe Insight to immersive media art exhibitions, there's plenty to enjoy right now.When the underground space opens, these platforms are the most likely ticket sellers — having an account ready means you can book in seconds on launch day! 🚀
Frequently Asked Questions (FAQ)
Q1. Why was the Seoul Plaza underground space unused for 40 years?
A. Built in the early 1980s, the space sat between Seoul Subway Line 2 tracks above and the underground shopping arcade below — a structurally awkward gap that proved difficult to develop. Without a clear purpose, it remained abandoned until Seoul City announced in 2026 that it would be redeveloped as a K-content cultural hub through a public-private partnership.
Q2. How can I find out the ticket price for the Seoul Underground K-Content Space?
A. As of May 2026, ticket prices have not yet been officially announced. Follow Seoul City's official website (seoul.go.kr) and official social media channels for the most up-to-date information. Also keep an eye on Seoul Media Hub (mediahub.seoul.go.kr) for press releases, and bookmark Klook and Trazy where tickets may be sold after opening.
Q3. How do I get to the Seoul Plaza Underground K-Content Space?
A. Take Seoul Subway Line 2 to Euljiro Ibgu (을지로입구) Station — the space will be directly connected from the station. City Hall Station (Lines 1 & 2) is also within a 5-minute walk. Bus connections across Seoul are plentiful given the central location, and the underground access means no outdoor walking even in bad weather.
Q4. When exactly does the Seoul Underground K-Content Space open?
A. The official opening is scheduled for October 2026. The exact date has not yet been confirmed. Monitor Seoul City's official channels (seoul.go.kr) and Seoul Media Hub (mediahub.seoul.go.kr) for the confirmed opening date and any pre-opening events.
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