Seoul Sky Observatory Guide — Lotte World Tower 117–123F, Glass Floor, and Seoul Sky vs N Seoul Tower

Seoul Sky (서울스카이) is the observatory at the very top of Lotte World Tower — floors 117 to 123 of Korea's tallest building (555 m) — with a glass-floor "Sky Deck" on 118F where you look straight down from about 500 meters. It sits in Jamsil, southeast Seoul, directly connected to Jamsil Station (subway lines 2 and 8). Go up before sunset to see the city by day, at dusk and at night with one ticket.

Seoul Sky at a glance

Where	Lotte World Tower, Jamsil (Songpa-gu) — Jamsil Station, lines 2 & 8
Floors	117–123F (entrance on B1, about a 1-minute express elevator)
Don't miss	Glass-floor Sky Deck on 118F, the sunset-to-night-view change
Tickets	Around ₩30,000 for adults at the counter; online bookings are often cheaper
Hours	Roughly 10:30 am to around 10 pm, later on weekends; last entry about 1 hour before closing

Prices and hours change with the season and events, so check the official website before you go.

Seoul Sky or N Seoul Tower?

	Seoul Sky (Lotte World Tower)	N Seoul Tower (Namsan)
Height	Indoor deck at about 500 m — the highest in Korea	Shorter tower, but on top of Namsan mountain
View	Han River, Seokchon Lake, Lotte World, southeast Seoul	Right in the middle of Seoul, 360° city view
Getting there	Straight from the subway, easy in the rain	Namsan cable car or bus, plus an uphill walk
Best for	Less walking, older travelers, the glass floor	A walk on Namsan and the love locks

If you're staying in Gangnam or Jamsil, Seoul Sky is the easy choice; from Myeongdong or central Seoul, N Seoul Tower is on your way.

Tips

• Arrive about an hour before sunset for daylight, sunset and night views on one ticket.
• Weekend evenings are busiest — weekdays or right after opening mean shorter elevator lines.
• Combine it with Lotte World Mall and a walk around Seokchon Lake below.
• Check the air quality and weather — visibility drops on hazy or rainy days.

Traveling with family or a group? We can put Seoul Sky, a food stop and shopping into one day with a private van. Send us your dates and we'll plan the route.