Seoul Summer Beach

Could a real swimming pool appear in the middle of Gwanghwamun Square?

A 20-meter swimming pool stretches out behind the statue of King Sejong, and in front of it water gushes down from a waterslide. When I first saw the photos, I thought they were edited, but it was real when I went there myself. Seoul Summer Beach is a signature summer festival in Seoul that turns the middle of the scorching city into a place for water play. It started in 2023, has grown bigger every year, and the 2026 event will be held at Gwanghwamun Square from July 10 to August 8 under the slogan "Wave Summer, Play Seoul." What I like most is that admission is free. The sight of splashing around against a backdrop of office towers and Gyeongbokgung Palace is hard to find anywhere else in Korea, so when I took foreign friends there, every single one of them pulled out a camera first.

The venue is broadly divided into three zones. There is the Water Play Zone with the pool and waterslide, the Play Wave Zone with the sandy playground called "Sand Ajit" and a shaded rest area, and the Play Market Zone lined with small-business flea market stalls and food trucks. It is not just a place to play in the water; it is designed so you can spend the whole day rolling around in the sand, resting in the shade, and grabbing snacks.

Swimsuits and swim caps are required to get in the water

The first thing I want to tell you about is the dress code. To enter the pool, you must wear a swimsuit and a swim cap (or a baseball cap), and entry is not allowed in everyday clothes like cotton T-shirts or jeans. If you go empty-handed thinking you will just dip your feet in, you will not actually be able to ride the slide, so if you want to enjoy the water properly, bring a swimsuit, a hat, clothes to change into, and a towel. The pool depths are divided into 1 meter and 80 cm, and the slides also differ in height between the 8-meter medium slide and the 10-meter large slide, so both children and adults can choose according to their comfort level.

Knowing the operation format in advance also helps avoid wasted trips. The water zone runs on a split-session system, where you use it for a set amount of time during each slot and then it switches to the next one. It is very popular, so daytime weekends in midsummer can have long waits; if you go on a weekday or right after opening when fewer people are around, you can enjoy it much more comfortably. The sand play area is assigned a smaller number of people per session and accepts both advance online reservations and on-site registration, but if you do not arrive within the reserved time, your spot is automatically canceled and given to people waiting on-site, so you need to keep an eye on the time. I recommend checking the official page once before you go for the exact operating hours and session schedule on the day.

Right by Gwanghwamun Station on Line 5, and easy to head home from this downtown festival

Transportation is one of this festival's biggest advantages. Gwanghwamun Square is directly connected to Gwanghwamun Station on Subway Line 5, so once you get off the train and come up from underground, you are almost there. Even if you walk from City Hall Station on Lines 1 and 2 or Gyeongbokgung Station on Line 3, it takes around 10 minutes. Because the event is not held late into the night but instead wraps up in the afternoon to early evening, it is especially nice for foreign travelers that they can look around at a relaxed pace and go back without worrying about catching the last train.

You do not need to worry much about payment on site. Admission itself is free, so there is no need to buy a ticket, and many food trucks and flea market stalls now accept cards and mobile payments. That said, some small-business booths still take cash only, so it is more comfortable to bring a little cash in small bills. The English-only guidance is not especially detailed, but the layout is simple enough that with clearly separated Water Zone, Sand Zone, and Food Zone areas, you can still enjoy it without much trouble just by following the signs and the lines. There are shaded pavilions, wooden platforms, and ground fountains throughout the square, so even if you do not play in the water, it is a good place to cool off and rest.

I strongly recommend this festival for people like these

In fact, this event has been steadily loved over the years. About 680,000 people visited in the first year, about 890,000 the next year, and in 2025 a total of 1.46 million people came over 21 days, establishing it as one of Seoul's representative summer escapes. On bright, harsh midday days, a hat and sunscreen are essential, and if it suddenly rains, the pool and ground fountain may stop operating, so it is a good idea to check the forecast before you leave. All you need to prepare is a change of clothes, a waterproof bag, and a small towel.

It is perfect for travelers planning to visit Gyeongbokgung Palace or Insadong as well, and for families looking for a free place to cool off with their kids. Being able to splash around for free and roll in the sand at one of Seoul's most iconic squares leaves a much more special summer memory than you might expect. If you are in Seoul this summer, bring a swimsuit and be sure to stop by.