GP

3XN · COMMERCIAL

Seocho L Tower

Seoul, South Korea — 2025

Seocho L Tower — base of the tower from the linear park

Park view · Visualisation: 3XN

A landmark workplace for Gangnam that opens its ground floor to the city.

A landmark workplace for Gangnam that opens its ground floor to the city.


The brief, “Future Gangnam Prime”, was read through four themes: Time & Future, defining a landmark; Hyper Personality and the Future Proof Workplace; Green Lifecycle; and Public = Culture.

“Great architecture doesn’t just occupy space, it activates the entire district around it.” The tower is designed for three audiences: the skyline, as a distinctive, quality landmark; the city, with a generous arrival experience; and the people who work there, as a future-proof workplace.

Role

Lead designer

Studio

3XN Architects, Copenhagen

Client

Private developer

Programme

Office tower, public lobby, rooftop garden

Location

Seoul, South Korea

Status

Competition

Year

2025

Awards

1st prize, competition

01

Orientation and placement

Where the global energy of Gangnam meets the cultural character of Seocho, the site sits at a key point in Seoul’s urban fabric. The former warehouse site becomes a commercial catalyst: a landmark along Seocho-daero that brings commerce and culture together and links the Gyeongbu Expressway with its historic context.

Project siteIconic landmarkUrban integrationPrecinct catalyst
01 / 04Project site

02

Tower form

The form is inspired by bojagi, the traditional Korean wrapping cloth that stands for prosperity, good fortune and artistry. The plan is split into four blocks that are rotated, stacked and scaled to break down the tower’s bulk, and vertical facade panels flare out at the base, with shading built in.

Facade · Visualisation: 3XNCafé and park · Visualisation: 3XNSkyline view at dusk · Visualisation: 3XN
Facade · Visualisation: 3XN
01 / 03

03

Every great high-rise starts at the ground plane

The stacked volumes spiral to open the ground floor as public space, with entrances on every side. A three-level lobby steps up towards the linear park, so arriving feels like walking through the tree canopy. Social lobby, co-working, wintergardens, café, green link, retail and an incubator hub create a sequence of places for all ages.

Ground-floor lobby · Visualisation: 3XNRooftop terrace · Visualisation: 3XNRooftop · Visualisation: 3XNSouthern basement staircase · Visualisation: 3XN
Ground-floor lobby · Visualisation: 3XN
01 / 04
Level 01Level 02Level 03
Level 01
01 / 03

04

The healthy workplace

A rational, flexible plan with a performing facade. Winter gardens and operable facades bring in fresh air, and connected floors make a workplace for tomorrow. At the top, the crown holds an executive suite and a rooftop garden that completes the spiral, with integrated PV and rainwater harvesting.

SectionSection through the roof gardenSection through the lobby
Section
01 / 03

Design: 3XN · Visualisations: 3XN

Next project

Chungnam, South Korea — 2024–ongoing

Chungnam Arts Center — Exterior view

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