Did you know? · Seoul
Seoul fun facts
Things you might not know about Seoul. Every fact comes from an official or primary source, named alongside it.
Updated October 2026
A wall over four mountains
The Seoul City Wall runs for 18.6 km in four sections: Baegak (4.7 km), Naksan (3.2 km), Namsan (6.7 km) and Inwang (4.0 km). The Baegak section was opened to the public in 2007 (seoulcitywall.seoul.go.kr).
Two World Heritage sites in the city
Jongmyo Shrine was inscribed on UNESCO’s World Heritage List in 1995, and Changdeokgung in 1997; Hwaseong Fortress in Suwon, a short train ride south, was inscribed in 1997 too.
Lanterns on UNESCO’s list
Yeondeunghoe, the lantern-lighting festival held before the Buddha’s Birthday, is on UNESCO’s Representative List of the Intangible Cultural Heritage of Humanity.
A bagel shop in Anguk
London Bagel Museum opened its first shop in Anguk in September 2021; its company now runs four bakery brands from Seoul (londonbagelmuseum.com).
Questions and answers
How long is the Seoul City Wall?
18.6 km, over four mountains, in four walking sections.