Photo: Seoul Parks (Seoul Metropolitan Government)
청계산도시자연공원
Mountain & trail · Seocho-gu
No records of Cheonggyesan survive; the name is simply assumed to come from the clear water running off the mountain. The Gwacheon-eupji gazetteer of 1899 calls it Cheongnyongsan, Blue Dragon Mountain, paired with Gwanaksan being called White Tiger Mountain
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Source: parks.seoul.go.kr
Seocho-gu Naegok Library
FreeLibrary · Cheonggyesan Ipgu Stn. (Sinbundang Line)
Public library in Seocho-gu. Free entry and reading, fully heated and air-conditioned.
Inneungsan Urban Nature Park
FreeMountain & trail · Cheonggyesan Ipgu Stn. (Sinbundang Line)
The mountain is named for Inreung, the tomb of King Sunjo lying to the north, of which it is recorded as the ancestral mountain. Stretching east to west across Seocho-gu in Seoul and Seongnam in Gyeonggi-do, it rises 327 m and remains much as nature made it
Seocho Sports Complex
₩5,500Sports facility · 양재2동
Public indoor pool in Seocho-gu with a six-lane 25m adult pool and a toddler pool. Open swim costs 5,500 won per session, and there is a gym on site. Open-swim time slots change monthly, so check before you go.

Audium
FreeMuseum · Cheonggyesan Ipgu Stn. (Sinbundang Line)
The world's first audio museum, from Edison's phonograph to 20th-century vintage audio, seen on a 90-minute docent tour that includes actual listening sessions. The building was designed by Kengo Kuma. Free, but all seats must be booked in advance and competition is fierce.
Korea Bonsai Museum
FreeMuseum · 내곡동
Yoolizzy Craft Museum
FreeArt gallery · Seonbawi Stn. (Line 4)
A non-profit museum devoted to metal craft, aiming to be a hub of Korea's contemporary craft movement.
Bukhansan Dulle-gil Trail
FreeGangbuk-gu · Bukhansan Ui Stn. (Ui-Sinseol Line)
A 21-section loop that runs gently below the ridgeline, with no summit climb involved. The Ui-dong pine forest path is a favourite with beginners.
Inwangsan Jarak-gil Trail
FreeJongno-gu · Dongnimmun Stn. / Gyeongbokgung Stn. (Line 3)
A barrier-free boardwalk loop past the dramatic rock faces painted in Inwang Jesaekdo. Links to the Hanyang City Wall trail for panoramic city views.
Bugaksan Hanyang City Wall Trail
FreeJongno-gu · Gyeongbokgung Stn. (Line 3) + bus
A historic walk along the fortress wall that once ringed Seoul. Easier to reach since the opening of Cheong Wa Dae, with city views from Baegakmaru.
Ansan Jarak-gil Trail
FreeSeodaemun-gu · Dongnimmun Stn. (Line 3)
Korea's first barrier-free loop forest trail. The boardwalk suits strollers and wheelchairs, with deep shade from pines and metasequoias and a tunnel of cherry blossoms in spring.
Achasan Ecological Park
FreeGwangjin-gu · Achasan Stn. (Line 5)
A gentle low mountain ideal for beginner hikers, with superb views of the Han River and Seoul. The native plant garden and butterfly garden are free.