COEX in Gangnam is often called just “a big mall,” but that undersells it. Between a soaring free library that’s become one of Seoul’s top photo spots, an aquarium, a K-pop landmark, and a centuries-old Buddhist temple right across the street, there are genuinely good things to do at COEX — and almost all of it is indoors, which makes it a perfect rainy-day, too-hot, or too-cold plan. Here’s what’s worth your time, and where to eat while you’re there.
Getting there
COEX sits above two subway stations, so it’s very easy to reach: Samseong Station (Line 2) connects directly into the mall, and Bongeunsa Station (Line 9) links straight into Starfield COEX Mall from Exit 7. Everything below is within a few minutes’ walk, mostly under one roof.
Starfield Library (별마당 도서관) — the must-see
This is the one everyone comes for. The Starfield Library is a vast open reading space in the middle of the mall, dominated by two-story-tall bookshelves you’ve probably seen on Instagram. It’s genuinely striking in person — soaring, bright, and free to walk around.
- Free entry, open daily 10:30am–10:00pm
- You can browse and sit and read; it’s a working library-cum-lounge, not just a photo backdrop, so keep your voice down
- Come a little off-peak if you want photos without crowds
COEX Aquarium (코엑스 아쿠아리움)
Down on the basement level, the COEX Aquarium is a solid indoor option, especially with kids — themed tanks, a tunnel, and a big variety of marine life.
- Hours: 10:00am–8:00pm (last entry 7:00pm); open daily
- Admission: 35,000 KRW adult/teen · 31,000 KRW child · free under 36 months
- Entrance on B1; near Bongeunsa Station Exit 7
The Gangnam Style statue (강남스타일 동상)
A fun free photo stop for K-pop fans: the giant “Gangnam Style” hands sculpture, a tribute to PSY’s global hit, sits on the plaza outside COEX. From the mall’s east exit, head left toward Bongeunsa Station and you’ll spot it in a minute. Strike the pose.
Bongeunsa Temple (봉은사) — across the street
The nicest surprise at COEX is what’s directly across from it: Bongeunsa, a working Buddhist temple with roots going back over a thousand years, sitting quietly amid the Gangnam skyscrapers. The contrast — incense and wooden halls against glass towers — is striking, and it’s a lovely, calm break from the mall.
- Free entry, open daily from early morning until late evening (roughly 5:00am–10:00pm)
- From COEX’s north exit, it’s about a 5-minute walk straight across the street
- In summer, the temple holds a lotus festival, when the grounds fill with lotus flowers and lanterns — beautiful if your visit lines up with it
- You can also join a Temple Stay program here for a deeper experience
A rainy-day option: the cinema
If the weather’s bad and you want to kill a couple of hours, there’s a Megabox cinema in the mall. One thing worth knowing for visitors: Hollywood films are usually shown in their original language with Korean subtitles, so English-speakers can watch them normally (Korean films generally have no subtitles). Check the listing for a subtitle/original-audio marking.
Where to eat at COEX
All that walking earns a meal, and COEX has plenty of good options. I’ve rounded them up in my guide to the best COEX restaurants — from Sariwon’s bulgogi and hearty Korean at Sotnaeum, to pho at Le Saigon and vegan food at Plantude.
Practical tips
- It’s almost all indoors — a great plan for a rainy, hot, or cold day (pair it with other ways to beat the Seoul summer).
- Half a day is plenty for the highlights; a full day if you add the aquarium and a leisurely temple visit.
- Subway: Samseong (Line 2) or Bongeunsa (Line 9) — both connect right into the mall.
- The mall is huge and easy to get turned around in; the Starfield Library makes a good central landmark to navigate by.
Verdict
For things to do at COEX, you get a surprising amount of range in one easy, weatherproof spot: gawk at the Starfield Library, see the aquarium, strike the Gangnam Style pose, and cross the street to the calm of Bongeunsa — then eat well before you leave. It’s one of the most convenient half-days in Seoul, and a genuine lifesaver when the weather won’t cooperate.
