Why NOW picked itA winter night walk along Cheonggyecheon. It runs 18:00-23:00, so it fits right after work; admission has not been announced yet, so check the official notice before you go.
This year's Seoul Lantern Festival lights up Cheonggyecheon from Cheonggye Plaza to Samil Bridge on Friday, Dec. 11 at 6 p.m. It runs nightly until 11 p.m. through Jan. 31, 2027; admission has not been announced yet.
The lights come on at 6 p.m. on Dec. 11
According to the Seoul Tourism Organization, this year's festival opens Friday, Dec. 11 and runs through Sunday, Jan. 31, 2027, 18:00-23:00 every day.
The hours suit a short stop on the way home in the cold season.
From hanji lanterns to media art
Traditional hanji lanterns, media-art light installations and hands-on programmes line the stream. This year's theme is "Seoul's Romance: Symphony of Light", and it is the 18th edition since 2009.
The detailed line-up has not been published yet.
Lantern sculptures along Cheonggyecheon
Cheonggye Plaza to Samil Bridge
The route runs from Cheonggye Plaza to Samil Bridge along the water, so you can start from either end.
The lanterns floating on the stream, as in the archive photos here, are the signature scene.
Seoul Lantern Festival 2012 in Cheonggyecheon
Admission is still unconfirmed
The Seoul festival portal lists it only as planned for December and shows no fee. Last year's edition was free, but whether this year matches needs an official announcement.
Lantern sculptures along Cheonggyecheon at the 2019 festival (archive photo, not this year's display). Photo by Ethan Doyle White, CC BY-SA 4.0, Wikimedia Commons