Cheonggyecheon
An elevated freeway once ran here. The city spent US$281 million to tear it out and bring the stream back.
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Completed in 2005, the restoration replaced the Cheonggye Expressway — built over a stream that had been buried under concrete after the Korean War — with a 10.9 km public waterway. The reversal from post-war slum district to downtown linear park is legible in the landscape itself, not in a plaque.
What to look for
- The stream running west to east below street level, in the exact footprint of the old expressway deck
- Bridges along the banks — their Joseon-era predecessors were rebuilt every 2–3 years as an official government drainage project, from the reign of King Taejong onward
- Where the water leaves central Seoul and joins Jungnangcheon on its way to the Han River and the Yellow Sea
The stream runs 10.9 km total; start at the western end in downtown Seoul for the densest urban contrast and walk as far as time allows.
Cheonggyecheon is one of 28 sights worth the detour in Seoul, all bundled offline in Voyage GO — download the Seoul pack and it sits on your map with no signal, filling your travel passport the moment you walk past.
More to see in Seoul
- ChangdeokgungThe kings kept skipping the official palace to live here instead — and they had centuries to prove the point.
- Seoul Metropolitan SubwayLine 1 launched in 1974 tracing Tokyo's blueprint; today 24 lines stretch over 100 km beyond the capital into rural Chungnam and Gangwon provinces.
- JongmyoSpirit tablets of Joseon kings still receive ritual offerings here, exactly as they have since 1394.
- Blue House (Cheong Wa Dae)South Korea's seat of presidential power since 1948 — a 62-acre compound so secure it was once called one of Asia's most protected official residences, until the gates briefly opened to everyone.
- Namdaemun (Sungnyemun)Built in 1398, burned by an arsonist in 2008, and painstakingly restored by 2013 — Seoul's southern gate has a complicated relationship with fire.
- National Museum of KoreaDuring the Korean War, staff packed 20,000 objects and moved them to Busan — that collection now fills the flagship museum of Korean history and art in South Korea.