Seoul City Hall Sky Observatory and More Underrated Seoul Experiences Every Traveller Should Discover in 2026

Written By: Sarannya Acharya

Sarannya Acharya

Sarannya Acharya is a content writer with a strong academic and professional background in media and communication. She holds an M.Sc in Media Science and is currently pursuing a Ph.D. at Swami Vivekananda University, Barrackpore, with a specialization in Advertising. With over three years of experience in content writing, she brings a blend of research-driven insight and creative storytelling to her work. Alongside her professional role, she is actively engaged in academics, contributing to the field through teaching and scholarly involvement. Her expertise lies in crafting well-structured, engaging, and informative content, supported by a solid foundation in media theory and practical industry knowledge.

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September 3, 2026 5:33 AM |

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Seoul is opening new ways for travellers to experience the capital beyond its busiest attractions. The Seoul City Hall Sky Observatory now gives visitors free evening access on Fridays and Saturdays, adding a fresh highlight to Seoul travel in 2026. Moreover, Seoul is developing more scenic viewpoints and cultural spaces across the city, giving tourists more reasons to explore after sunset. From City Hall views to mountain observatories and the Han River skyline, these Seoul experiences offer memorable alternatives to conventional sightseeing. Travel And Tour World urges readers to read the entire story to discover underrated Seoul experiences, practical travel details and the best ways to explore the city in 2026.

A New Evening Attraction for Seoul Visitors

Travellers exploring Seoul can now add a free skyline experience to their weekend itinerary. Seoul City Hall’s Sky Observatory will open until 10 p.m. every Friday and Saturday from September 4, 2026. From November through February, the weekend closing time will change to 9 p.m. Weekday hours remain 7:30 a.m. to 6 p.m.

Located across the eighth and ninth floors of Seoul City Hall’s western section, the observatory covers about 122 square metres. Its floor-to-ceiling windows overlook Deoksugung Palace, Seoul Anglican Cathedral and Sejong-daero, with views extending between Gwanghwamun and Sungnyemun. Benches, tables and tiered seating give visitors places to rest while enjoying the scenery.

66,000 Visitors in Eight Weeks

The attraction opened for daytime visitors on July 6 and welcomed approximately 66,000 people during its first eight weeks through August 30. The strong early response prompted Seoul authorities to introduce additional weekend evening access.

Admission is free, and travellers do not need advance reservations. Visitors can reach the observatory using a dedicated elevator from the first floor of the main building to the ninth floor.

City Hall Becomes a Nighttime Tourism Hub

The wider City Hall area is also gaining additional evening attractions. Seoul’s Jeongdong Observatory will operate until 10 p.m. on Fridays and Saturdays. Its viewing space expanded from 117 to 322 square metres, a 2.8-fold increase, following renovation work.

The Sky Garden on the fifth floor of Seoul Metropolitan Library will operate until 9 p.m. on weekdays, with its viewing area expanded towards Seoul Plaza.

Guided Tours and Evening Illumination

From September 18, guided Tong-Tong Tours will operate at 7:30 p.m. every Friday and Saturday. The approximately one-hour tour covers City Hall interiors, Seoul Gallery, the Sky Observatory and Sky Garden. Online bookings are scheduled to begin September 15.

Seoul City Hall and Seoul Metropolitan Library will also be illuminated daily from 30 minutes after sunset until 11 p.m. The displays will feature Seoul-themed colours, the Haechi mascot, seasonal designs and special themes for festivals and city diplomacy anniversaries.

Practical Tips for International Travellers

Seoul City Hall is located at 110 Sejong-daero, Jung-gu. City Hall Station, served by Subway Lines 1 and 2, provides convenient access. Seoul’s official guidance recommends public transportation because parking capacity is limited.

Seoul plans to connect the three viewpoints into a broader viewing-and-rest belt. Depending on visitor response, the city is considering expanding operations to six nights a week in 2027.

Seoul Beyond the Famous Sights: 7 Underrated Experiences Travellers Can Add to a City Break

The new Seoul City Hall Sky Observatory is only one part of Seoul’s expanding programme of accessible, low-cost experiences. The observatory welcomed about 66,000 visitors during its first eight weeks, from July 6 through August 30, 2026. It covers roughly 122 square metres across City Hall’s eighth and ninth floors. Entry is free, reservations are unnecessary, and Friday and Saturday opening hours now extend to 10 p.m.

For travellers, the wider opportunity is even more interesting. Seoul’s official tourism and data platforms identify numerous less-publicised places where visitors can experience nature, history, architecture and local culture without following the city’s busiest tourist routes. Seoul’s tourism database uses monthly KT mobility data covering 118 major tourist locations, although these figures are statistical estimates rather than physical ticket counts.

Important Note About Five-Year Monthly Visitor Statistics

A key data limitation should be clear before comparing these attractions. There is no official five-year, month-by-month visitor series publicly available for every underrated attraction listed below.

Seoul’s official tourism dashboard provides monthly estimated visitor data for selected major tourist areas, while separate government statistics cover ticketed attractions. The city specifically warns that its KT-based visitor figures are estimates and may differ from actual numbers.

Consequently, inventing 60 monthly figures for seven attractions would create false statistics. The table below therefore separates verified visitor figures from operational and facility data, rather than presenting unsupported numbers.

Sources: Seoul Metropolitan Government, Seoul Data Hub and Official Travel Guide to Seoul.

1. Jeong-dong Observatory: A Quieter Alternative for Palace Views

Travellers wanting another elevated perspective should consider Jeong-dong Observatory. It is located on the 13th floor of Seoul City’s Seosomun Building.

The viewing area was enlarged from 117 square metres to 322 square metres, a roughly 2.8-fold expansion. Seoul has also improved lighting, background music and seating aimed towards the windows. The observatory now remains open until 10 p.m. on Fridays and Saturdays.

The attraction provides views towards Deoksugung Palace and surrounding central Seoul.

There is no credible government-published dataset showing its visitors for every month from 2021 through 2025. Therefore, monthly visitor numbers should not be manufactured.

How to visit: Include it within a central Seoul itinerary and check Seoul Metropolitan Government operating information before departure.

2. Seoul Metropolitan Library Sky Garden: A Rooftop Pause

The Sky Garden on the fifth floor of Seoul Metropolitan Library provides another low-key viewpoint around City Hall.

Seoul has expanded the viewing area towards Seoul Plaza and extended weekday opening until 9 p.m.

This is particularly useful for travellers seeking a quieter stop between major sightseeing attractions.

It can also be combined with City Hall and the Sky Observatory because the three facilities sit within the same broader civic district.

How to visit: Check the library’s current visitor rules before travelling, then combine the rooftop garden with Seoul Plaza and City Hall.

3. Seonyudo Park: An Industrial Site Reborn as an Ecological Park

Seonyudo Park offers a very different Seoul experience.

The site occupies Seonyudo Island on the Han River and was formerly a water-filtration plant. It was subsequently transformed into an ecological park.

The official Seoul tourism guide says the park incorporates four parks and multiple walking trails, together with a botanical garden and Seoul Design Gallery.

Its published operating hours are 6 a.m. to midnight daily. The exhibition hall operates separately from 9 a.m. to 6 p.m., with shorter winter hours and Monday closure.

No official five-year monthly visitor series was located for the park, so monthly attendance should not be represented as fact.

4. Oil Tank Culture Park: Six Tanks With a New Purpose

The Oil Tank Culture Park is another unusual choice for travellers interested in Seoul’s industrial history.

The site was once an oil depot. Seoul converted it into a public cultural complex while retaining six oil-storage tanks. These structures now function as performance venues, exhibition spaces and learning facilities.

The park itself operates year-round. The tank facilities are generally open Tuesday through Sunday from 10 a.m. to 6 p.m., with Monday closure. The official guide also lists accessible pathways, accessible parking and accessible toilets.

Again, the government tourism source does not provide a five-year monthly visitor count for this individual attraction.

5. Eunpyeong Hanok Village: Traditional Architecture With Mountain Scenery

Travellers looking beyond central Seoul can head towards Eunpyeong Hanok Village in Jingwan-dong.

The official Seoul tourism guide describes a modern hanok district set against Bukhansan Mountain. Walking routes connect the village with Jingwansa Temple and the Literature Museum.

This makes the area particularly suitable for visitors wanting architecture, photography and walking rather than conventional shopping.

Because it is an open neighbourhood rather than a single ticketed attraction, a simple monthly entrance count is not available through the cited official sources.

6. Tong-Tong City Hall Tour: See Seoul From the Inside

For visitors wanting structured access, Seoul is also introducing evening Tong-Tong Tours.

From September 18, 2026, guided sessions are planned at 7:30 p.m. every Friday and Saturday. The programme lasts about one hour and combines City Hall’s interior, Seoul Gallery, the Sky Observatory and Sky Garden. Online reservations are scheduled to open September 15.

7. Seoul’s Nighttime Viewing Belt

These attractions are increasingly being treated as connected experiences rather than isolated sites.

Seoul plans to link the Sky Observatory, Jeong-dong Observatory and Sky Garden into a broader viewing and resting belt around City Hall. The city is considering expanding operations to six nights a week in 2027, depending on the 2026 trial programme and visitor response.

The city’s nighttime strategy also includes architectural illumination. City Hall and Seoul Metropolitan Library are scheduled to be illuminated from 30 minutes after sunset until 11 p.m. daily. Seasonal and special-event designs will also be incorporated.

For global travellers, the important takeaway is not simply that Seoul has another observation deck. The city is creating more opportunities to explore after sunset, often at little or no cost.

What the Available Statistics Really Tell Travellers

The Seoul Data Hub explains that its tourism visitor figures are derived from KT mobility data and represent estimated movements into designated areas. They should therefore not be confused with ticket sales or unique-person counts.

For travellers planning Seoul in 2026, the safest approach is to use official operating information rather than relying on unsupported attendance rankings. The combination of free viewpoints, ecological parks, converted industrial spaces, hanok scenery and guided civic tours gives visitors several ways to experience Seoul away from its most familiar attractions.