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Wonderweeks Company inc., | CEO: Kyungyoon Kang | Business Registration Number: 653-81-02169 8F, ES Tower, 17 Teheran-ro 52-gil, Gangnam-gu, Seoul, Republic of Korea | email: contact@mom-mom.net | tel: +82-2-1600-9351

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KT Onmaru

A free hands-on exhibition hall where you can explore the history and future of telecommunications in a fun, playful way

Updated at 05/04/2026

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  • Address

    2nd Floor, KT Gwanghwamun Building West, 178, Sejong-daero, Jongno-gu, Seoul, Republic of Korea

  • Contact

    0507-1426-0730

  • Facilities

    Reservation

  • Reservation

    Both advance reservations and same-day visits are available - Naver Reservation

  • Open/Closes

    Mon10:00 ~ 18:00
    Tue10:00 ~ 18:00
    Wed10:00 ~ 18:00
    Thu10:00 ~ 18:00
    Fri10:00 ~ 18:00
    Sat10:00 ~ 18:00
    SunRegular closed day

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Prices & Programs of KT Onmaru

  • [Fees]
  • Free
  • [Programs]
  • Onmaru Docent Tour: available in Korean and English (advance reservation required)
  • Onmaru Culture Dining: operates on Wednesdays (lunch) / Fridays (dinner)
  • [Visitor Information]
  • Parking: not available (public transportation recommended)
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Parenting Tips for KT Onmaru

  • There is a well-prepared interactive exhibition for children, and after the experience, you may receive various gifts such as eco bags and magnets, with some items available in limited quantities.
  • This is a free exhibition where you can see the history of modern telecommunications in Korea at a glance.
  • If you would like a professional explanation, try applying for the free docent tour through advance reservation.
  • The exhibition space is divided into Zones 1, 2, and 3, and the docent tour is held only in Zone 1, so it is more efficient to look around Zones 2 and 3 first before the tour.
  • If there is a wait, immediate entry may be difficult, and if you register your mobile number, you will receive a KakaoTalk entry notification.
  • Viewing may be restricted due to private rentals or event schedules, so it is best to check whether it is operating through the homepage before your visit.
  • Some experiences include an SNS upload mission, and exhibition items other than the hands-on displays should be viewed only with your eyes.
  • Making a payphone card requires advance reservation and is popular, so it often closes early.
  • Because it is crowded on weekends, it is best to visit at opening time.
  • Staff are stationed at each corner, so the space is kept well organized.
  • Parking is not available, so it is recommended to visit via the passage connected to Gwanghwamun Station Exit 2.

KT Onmaru

KT Onmaru is a free exhibition hall where you and your child can explore the history of telecommunications and future technology through playful, hands-on experiences. Rather than simply looking around, there are many ways to participate directly, so kids are less likely to get bored and parents can enjoy sharing memories together.

Fun of hands-on exhibits

The exhibition naturally connects the past, present, and future of telecommunications. Kids can enjoy engaging content such as telegrams, telephones, and media art, and elementary school children in particular will find it a great mix of learning and fun. After some activities, you may receive goodies such as eco bags and magnets, which adds to the satisfaction of the visit.

Things to know before your visit

Admission is free, but popular activities and the docent tour require advance booking. On weekends, there may be a wait, so it is more convenient to visit around opening time or check in advance whether there is a private event schedule.

Visiting with children

There is no separate kids' zone, but the exhibition itself is hands-on, making it a good place to visit with children. Please note in advance that there is no nursing room, diaper changing station, stroller rental, or baby chair. Parking is also not available, so the easiest way to visit is by public transportation using the passage connected to Exit 2 of Gwanghwamun Station.

"If you are planning a special outing in the city with your child, stop by KT Onmaru for a light and enjoyable visit."

FAQ about KT Onmaru

  • Is KT Onmaru a good place to visit with children?
    Yes. KT Onmaru is an exhibition hall where children can enjoy hands-on experiences with the history of telecommunications and future technology in a playful way. There is especially a lot of content that elementary school children will find interesting.
  • Does KT Onmaru have a kids' zone or activities for children?
    There is no separate kids' zone, but the exhibition itself is designed as a hands-on experience. There are many elements that children can enjoy, such as telegrams, telephones, media art, and AI-based experiences.
  • How can I join the docent tour at KT Onmaru?
    The KT Onmaru docent tour is offered in Korean and English, and advance booking is required. If you would like to explore the exhibition with expert explanations, it is best to book before your visit. It is also helpful to note that the tour takes place in Space 1.
  • Can I enter KT Onmaru without a reservation?
    Both advance reservations and walk-in visits are possible, but there may be a wait on weekends or during busy times. If there is a wait, you can register your mobile phone number and receive an entry notification through KakaoTalk.
  • What are the opening hours and closed days for KT Onmaru?
    KT Onmaru is open from Monday to Saturday, from 10 AM to 6 PM. It is regularly closed every Sunday.
  • How much is the admission fee for KT Onmaru?
    KT Onmaru is free to visit. One of its biggest advantages is that you can enjoy a hands-on exhibition without any admission cost.
  • Does KT Onmaru have a nursing room or diaper changing station?
    Based on the provided information, KT Onmaru does not have a nursing room or diaper changing station. There is also no baby chair or stroller rental service, so it is best to prepare in advance when visiting with infants or toddlers.
  • Is KT Onmaru convenient to visit with a stroller?
    You can use the elevator inside the KT Gwanghwamun Building to reach the exhibition hall on the second floor, so stroller access is generally possible. The exhibition space is also relatively spacious, so moving around is not expected to be too difficult.
  • Is parking available at KT Onmaru?
    No. KT Onmaru does not provide visitor parking, and parking is not available. When visiting with children, the most convenient option is to use public transportation through the passage connected to Exit 2 of Gwanghwamun Station.
  • Is there anything I should check before visiting KT Onmaru?
    Access to the exhibition may be limited due to private rentals or event schedules, so it is a good idea to check the website before your visit to confirm operation status. Also, popular activities or programs such as making a public telephone card may require advance booking or may fill up early.

KT Onmaru Address

Address: 2nd Floor, KT Gwanghwamun Building West, 178, Sejong-daero, Jongno-gu, Seoul, Republic of Koreaicon-copy-black

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How to make a reservation for KT Onmaru?

Both advance reservations and same-day visits are available - Naver Reservation