Cafe Onion Seongsu

어니언 성수

Café $$ Seongsu Station · 3min walk

Partial English Cards OK Walk-in OK

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Hours

Sun 8:00 AM - 10:00 PM
Mon 8:00 AM - 10:00 PM
Tue 8:00 AM - 10:00 PM
Wed 8:00 AM - 10:00 PM
Thu 8:00 AM - 10:00 PM
Fri 8:00 AM - 10:00 PM
Sat 8:00 AM - 10:00 PM

A 1970s metal factory turned into the industrial-chic cafe that defined Seongsu.

Order the pandoro, an Italian brioche piled with a snowdrift of powdered sugar, plus the salt bread (소금빵).
The original Onion location, set inside a former 1970s warehouse that was once a supermarket then a metal factory.
Bare grey walls, communal tables, a small garden.
Other Onion branches in Anguk, Mia, and Gwanggyo, but the Seongsu warehouse is the one that started the brand.

Address & phone confirmed May 2026

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