How to Visit Seoul Sky at Lotte World Tower: From Jamsil Station to the Glass Floor

Glass floor at Seoul Sky overlooking illuminated streets and buildings far below at night.

Once you arrive at Jamsil Station, Lotte World Tower is easy to spot. The tower rises above the surrounding buildings and is visible from a distance.

But reaching the base of the tower and entering the Seoul Sky observatory are two different things. Lotte World amusement park, Lotte World Mall, and the aquarium are all located nearby, so you still need to find the separate entrance to Seoul Sky.

Lotte World Aquarium is inside Lotte World Mall and has its own separate entrance.

This guide follows the full route: finding the entrance from Jamsil Station, passing through the underground admission area, taking the Sky Shuttle to the observation floors, reaching the glass floor on the 118th floor, and returning toward Jamsil Station after your visit.

Quick Check

1. From Jamsil Station, Follow the Underground Passage into Lotte World Mall

Seoul Sky is an observatory inside Lotte World Tower. Although it is close to Lotte World amusement park and the names are similar, the two have separate entrances.

The admission area is underground. From Jamsil Station, follow the underground passage toward Lotte World Mall. The passage leads directly into the mall, so there is no need to go up to street level.

When I walked the route, I followed the signs for Lotte World Mall from the station into the mall. From there, the SEOUL SKY signs led me to the observatory entrance. Signs for the mall and other attractions appear nearby, so once you are inside, follow SEOUL SKY rather than trying to judge the direction from the tower itself.

2. After the Ticket Check, Pass Through the Video Area and Board the Sky Shuttle

After your ticket is checked, the route continues through an underground waiting area and a space where moving images cover the walls.

Beyond this area, you reach the Sky Shuttle, which takes you up to the observation floors.

Inside the elevator, there is no view outside. Instead, videos fill the walls and ceiling while the height display changes as you ascend.

3. Floors 117–123: Seoul Sky Continues Above the First Observation Floor

Seoul Sky's observation area extends from the 117th through the 123rd floors.

After you step out of the Sky Shuttle, viewing areas continue on the floors above. These include the glass-floored Sky Deck on the 118th floor, the outdoor Sky Terrace on the 120th floor, and the 123 Lounge on the 123rd floor.

4. The Sky Deck on the 118th Floor: You Feel the Height Beneath Your Feet

The Sky Deck on the 118th floor is located 478 meters above the ground and is recognized by Guinness World Records as the world's highest glass-floor observation deck.

The difference comes from where your feet are. At a regular observation window, a glass wall separates you from the view outside, while your feet remain on a solid indoor floor as you look down. At the Sky Deck, the same view is no longer only beyond the window. It is directly beneath your feet.

When I visited, people reacted in very different ways. Some people who had looked down through the regular windows without hesitation slowed their steps at the glass floor or reached for a companion's hand. Others walked straight to the center, took photos, or sat down on the glass and stayed there for a while.

5. After the Visit: Take the Elevator Down and Find the Signs to Jamsil Station

After seeing the glass floor and the observation windows, follow the signs to the elevators and return to the underground level.

Once you arrive downstairs, look for the signs to Jamsil Station inside Lotte World Mall.

On the way in, the tower visible from a distance shows you where to go. On the way out, the signs inside the building take over, especially those pointing to Jamsil Station.

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